Ancient DNA reveals pervasive directional selection across West Eurasia

April 16th, 2026

Ancient DNA reveals pervasive directional selection across West Eurasia, Nature acknowledges:

Ancient DNA has transformed our understanding of population history, but its potential to reveal as much about human evolutionary biology has not been realized because of limited sample sizes and the difficulty of distinguishing sustained rises in allele frequency increasing fitness — directional selection — from shifts due to migrations, population structure, or non-adaptive purifying or stabilizing selection. Here we present a method for detecting directional selection in ancient DNA time-series data that tests for consistent trends in allele frequency change over time, and apply it to 15,836 West Eurasians (10,016 with new data). Previous work has shown that classic hard sweeps driving advantageous mutations to fixation have been rare over the broad span of human evolution. By contrast, in the past ten millennia, we find that many hundreds of alleles have been affected by strong directional selection. We also document one-standard-deviation changes on the scale of modern variation in combinations of alleles that today predict complex traits. This includes decreases in predicted body fat and schizophrenia, and increases in measures of cognitive performance. These effects were measured in industrialized societies, and it remains unclear how these relate to phenotypes that were adaptive in the past. We estimate selection coefficients at 9.7 million variants, enabling study of how Darwinian forces couple to allelic effects and shape the genetic architecture of complex traits.

There is no compelling rationale for sending large, expensive, and highly capable warships into contested coastal waters

April 15th, 2026

Fleet Tactics and Naval OperationsFleet Tactics and Naval Operations looks at modern tactics and operations:

If Trident submarines could be targeted, they would go down with many warheads—more than the number of nuclear weapons that would be expended to sink them. These huge submarines seem to have been designed on a cost-effective basis—that is, economies of scale drove the concentration of twenty-four missiles in each vessel, each missile armed with eight multiple independently targeted reentry vehicle warheads (MIRVs), without regard for the possibility that the submarines might be detectable someday. Had the designers factored even the remote possibility that these boats might be tracked at sea or else attacked in port or at dispersed harbors they would have distributed Trident missiles on more submarines, even though that would have been less expedient.

The most striking illustration of the concentration of warheads in the modern nuclear arsenal was the MX missile, which carried about ten. A natural but unforeseen consequence of the first strategic arms limitation treaty, or SALT I, which counted missile launchers rather than warheads, is that the land-based MX system was considered destabilizing because it offered the enemy an opportunity to destroy many warheads with one in a first strike.

[…]

The most recent ASCM attacks from warships or aircraft were in the Falklands War in 1982 and in the extended Iran-Iraq War in the 1980s. This should be no reason for complacency. First, new missiles have become hotter and harder to defend against. Second, although there have been no recent sea-launched missile attacks on ships, there have been a great many attacks from the sea, using land-attack missiles. On land it is much harder to assess the number of hits achieved, the effects on the different conflicts, or the recovery time needed to restore an airfield, replace a missile launch site, or reopen a factory. Partly as a result of land-attack missiles from the sea, both states and insurgents have increased the numbers and ranges of missiles to counter them. Third, attacking ships by missiles is less costly than defending against them with hard-kill systems, especially with surface-to-air defensive missiles. Fourth, saturation attacks, in which many missiles arrive on a target simultaneously, have not yet occurred, but such tactics seem likely to be used in the future.

[…]

It is a reminder that the decision to mass or disperse depends on defensive considerations, not offensive ones, and it has done so since World War II, when aircraft carrier battle tactics were developed. In cases when defenses are likely to be stronger when the ships are concentrated, the fleet should be massed the way the U.S. carrier fleets were concentrated in 1944. If defenses are weak, however, as they were against attack from the air in 1942, then a dispersed force is more effective and the need to out-scout the enemy and attack effectively first will be more urgent.

[…]

The principle abides: a fleet that cannot reliably attack first must mass for effective defense. If its defense cannot be made effective, then it must fight dispersed and win by out-scouting the enemy so as to avoid all attacks.

[…]

There is no compelling rationale for sending large, expensive, and highly capable warships into contested coastal waters unless they are able to take several hits and continue fighting without missing a beat. It is better to fight fire with fire, using expendable, missile-carrying aircraft or small surface craft. In fact, ever since the introduction of numerous torpedo boats, coastal submarines, and minefields early in this century, contested coastal waters have been taboo for capital ships, and have become the almost exclusive province of flotillas of small, swift, lethal fast-attack craft.

[…]

A warcraft with great offensive firepower and little means of defense is extremely vulnerable and creates a highly unstable tactical situation. To perform effectively, it depends on a first strike, a stealthy attack, or a better combination of scouting and weapon ranges. A warcraft with such a mix of attributes is an anomaly. Why is such a “mistake” built? Ostensibly, because designers believe that in cases when the measure of effectiveness is simple firepower, ? or ?, it is cost-effective to put many good shots in each craft. But that ignores the force-on-force nature of battle. A better measure of effectiveness is how much deliverable firepower it can muster over its combat life, which is a combination of offensive firepower and counterforce.

[…]

A major consequence of massing for defense is the guarantee that the enemy will be aware of the fleet and its general location. In such cases, electronic-warfare tactics should be designed not to mask the presence of the fleet, which is impossible, but to complicate the enemy’s efforts to track and target the key units that constitute its striking power.

[…]

Some countries will use fishing boats and small vessels that resemble innocent coastal traffic to detect and report enemy presence.

[…]

In cluttered, confined waters the normal advantage of longer-range weapons aided by targeting with satellites and over-the-horizon radar is muted or lost. The cost of individual missiles is also more important in coastal combat because more warships and UAVs likely will be engaged, and running out of ordnance is an important consideration.

[…]

Remotely controlled surface vessels can remain on-station for long periods of time and carry relatively large payloads—both valuable for deterrence. The growing potential for autonomous undersea surveillance and for attack in shallow or confined seas will increase the threat to high-value nuclear submarines and other capital assets, making less expensive manned and unmanned nonnuclear submersibles all the more useful in waters such as the Yellow, Arabian, and Baltic Seas.

The fact that precise homing enables tacticians to equip smaller platforms with offensive capability has led to two recent advancements in missile warfare. One is a system called Club K, developed by the Russian armed forces, in which box launchers are carried on trucks, where they can be at least partially concealed, and can be dispersed widely. The vehicle mobility gives an attacker both maneuverability and survivability at low cost. The mobile launchers also can be used to replace or expand offensive power at sea quickly in cases where larger warships are damaged and cannot be repaired immediately; the launchers can be installed on a wide variety of vessels of varying sizes.

[…]

A disadvantage of the concept is its very invisibility. Influence requires that in edge-of-war scenarios and crises, the deterring force must present the threatening enemy with a visible threat—a task that usually requires the presence of clearly identifiable warships.

[…]

Cares’ analysis is both startling and compelling, showing how, by forcing the enemy to spread his attention among many separate units, a force of ships carrying unmanned attackers and defenders can defeat similar numbers of enemy ships. Cares demonstrates mathematically that because of the power of a numerical advantage, adding only one unmanned surface vehicle in each LCS dramatically increases combat effectiveness.

Ignoffo found no evidence supporting the idea that Sarah Winchester communed with spirits

April 14th, 2026

Captive of the Labyrinth by Mary Jo IgnoffoThe lore that Sarah Winchester built her mansion to house ghosts killed by Winchester rifles is likely just gossip and marketing, Drew Breunig says, citing a piece that summarizes Captive of the Labyrinth:

Ignoffo found no evidence supporting the idea that Sarah Winchester communed with spirits. She believes that what drove Sarah Winchester to build was her desire to be an architect.

Sarah Winchester lived at a time when it was highly unusual for women to be architects. She wasn’t licensed, so her own home was the perfect place—and the only place—where she could practice architecture.

Whatever her motivations were, Sarah Winchester built a house with more than 150 rooms, 2000 doors, 47 fireplaces, 40 bedrooms, 40 staircases, 17 chimneys, 13 bathrooms, six kitchens, three elevators, two basements, and one shower. She spent nearly all of her life being an architect.

We aren’t as rich as Sarah Winchester, Drew Breunig says, but when AI-generated code is cheap, we don’t need to be:

After Opus 4.5 and recent work enabling Agent Teams, the average net lines added by Claude per commit is now smooth and steady at 1,000 lines of code per commit.

1,000 lines of code per commit is ~2 magnitudes higher than what a human programmer writes per day.

If you search for human benchmarks, you’ll find many citing Fred Brooks’ The Mythical Man Month while claiming a good engineer might write 10 cumulative lines of code per day. If you further explore, you’ll find numbers higher than 10 cited, but generally less than 100.

[…]

Unfortunately, everything else remains roughly the same cost and roughly the same speed. Feedback hasn’t gotten cheaper; the “eyeballs” that guided the software developed by the bazaar haven’t caught up to AI.

There is only one source of feedback that moves at the speed of AI-generated code: yourself. You’re there to prompt, you’re there to review. You don’t need to recruit testers, run surveys, or manage design partners. You just build what you want, and use what you build.

And that’s what many developers are doing with cheap code: building idiosyncratic tools for ourselves, guided by our passions, taste, and needs.

(Hat tip to Gaikokumaniakku.)

Soldiers are more cautious when excessive boldness results in death rather than embarrassment

April 13th, 2026

Fleet Tactics and Naval OperationsOne of our most realistic ways to teach ground tactics, Fleet Tactics and Naval Operations notes, is on instrumented ranges that substitute lasers for deadly bullets and shells:

English tactical analyst David Rowland, however, discovered the troubling fact that in infantry battles the difference between casualty rates inflicted in actual combat and those estimated on an instrumented range was less by a factor of seven. Soldiers are more cautious when excessive boldness results in death rather than embarrassment.

Former member of US Army’s elite Delta Force unit arrested for leaking secrets to reporter

April 12th, 2026

Fort Bragg Cartel by Seth HarpIt seems a stretch to call her “a former member of the US Army’s elite Delta Force,” but she has been arrested for leaking classified secrets:

Courtney Williams, 40, was arrested Wednesday in connection with her alleged transmission of classified national defense information to individuals not authorized to receive it, including a journalist.

While the affidavit doesn’t name the journalist, Williams is cited heavily in Seth Harp’s book ‘The Fort Bragg Cartel: Drug Trafficking and Murder in the Special Forces‘ and was featured in a Politico profile by Harp, both published last year.

The article, titled ‘My Life Became a Living Hell: One Woman’s Career in Delta Force, the Army’s Most Elite Unit‘ detailed her time as a ‘signature reduction specialist.’

Court documents claim that between 2022 and 2025, Williams spoke via phone and text to Harp about her time working with the elite unit, which required her to sign a Classified Information Nondisclosure Agreement when she was hired and fired.

In the affidavit, Special Agent Jocelyn Fox cited a text between the two she said occurred on or about the day the book and article were published.

‘Other than a few factual errors, I would definitely have been concerned with the amount of classified information being disclosed,’ Williams’ text read.

‘I thought things I was telling you so you could have a better general understanding of how the (SMU) was set up or operated would not be published and it feels like an entire TTP (Tactics, Techniques and Procedures) was sent out in my name giving them a chance to legally persecute me.’

[…]

When Williams was fired, she filed an EEOC complaint and eventually settled for an amount she claimed was ‘sufficient to buy a small house in North Carolina.’

[…]

Harp wrote that Williams’ job meant she managed ‘valid but fictious passports’ and other identification for special forces operators on overseas missions.

His story also details accusations of what Harp described as gender discrimination and sexual harassment.

One incident mentioned Williams being forced to bend over for a supervisor ‘to assess whether her underwear could be seen through the fabric.’

[…]

On the day both the profile and the book were released, Williams admitted to Harp in a text message she was ‘concerned about the amount of classified information being disclosed.’

She sent someone else a message writing: ‘I might actually get arrested . . . for disclosing classified information.’

In another message, she admitted she was ‘probably going to jail for life.’

When she was asked if she knew there could be legal consequences, she responded: ‘I have known my entire career, they tell you everyday . . . 100 times a day.’

Some clues will not reach the enemy decision-maker

April 11th, 2026

Fleet Tactics and Naval OperationsHarvard professor Barton Whaley’s study of strategic deception, Fleet Tactics and Naval Operations explains, led him to make certain recommend­ations:

Most deception in the twentieth century was supported by commun­ications and other electronic media. Only 23 of the 115 deceptions that Whaley investigated from 1914 to 1968 involved naval operations, such as Pearl Harbor and Midway, and most of those dealt with amphibious assaults, such as the Normandy invasion.

Nevertheless, many of Whaley’s general conclusions regarding successful deception are robust for fleet tactics and campaigns as well. His prescriptions include

  • Reinforcing preconceptions or expectations of the enemy commander; then do something different.
  • Using deception, which he says is a low-risk endeavor, whether it works or not.
  • Using multiple false clues—say up to six—because some clues will not reach the enemy decision-maker, and using more than one clue adds credibility to the ploy.
  • Employing strategic deception does not cost much in forces or dollars, but it involves some devoted thinking by the deceiver and his staff. It is not certain that tactical deception will be similarly inexpensive in terms of the number of forces that are needed to achieve it.

They stopped asking Bill to fill out the form

April 10th, 2026

I somehow missed Andy Hertzfeld’s –2,000 Lines Of Code back in the day:

In early 1982, the Lisa software team was trying to buckle down for the big push to ship the software within the next six months. Some of the managers decided that it would be a good idea to track the progress of each individual engineer in terms of the amount of code that they wrote from week to week. They devised a form that each engineer was required to submit every Friday, which included a field for the number of lines of code that were written that week.

Bill Atkinson, the author of Quickdraw and the main user interface designer, who was by far the most important Lisa implementer, thought that lines of code was a silly measure of software productivity. He thought his goal was to write as small and fast a program as possible, and that the lines of code metric only encouraged writing sloppy, bloated, broken code.

He recently was working on optimizing Quickdraw’s region calculation machinery, and had completely rewritten the region engine using a simpler, more general algorithm which, after some tweaking, made region operations almost six times faster. As a by-product, the rewrite also saved around 2,000 lines of code.

He was just putting the finishing touches on the optimization when it was time to fill out the management form for the first time. When he got to the lines of code part, he thought about it for a second, and then wrote in the number: -2000.

I’m not sure how the managers reacted to that, but I do know that after a couple more weeks, they stopped asking Bill to fill out the form, and he gladly complied.

(Hat tip to Gaikokumaniakku.)

Even Communist regimes publish military theory openly

April 9th, 2026

Fleet Tactics and Naval OperationsFleet Tactics and Naval Operations discusses the great variables in naval warfare:

In his book Discussion of Questions in Naval Tactics, Russian Vice Admiral Makarov related a remark that Napoleon made to the Russian ambassador to France in 1812: “All of you think that you know war because you have read Jomini. But if war could be learned from his book, would I have allowed it to be published?”

True, if theory won battles, theory would be a state secret. But it does not win battles. Even Communist regimes publish military theory openly in the interest of fostering a unified purpose. Theory falls short because it cannot predict the variables that decide battle tactics and outcomes. Theory sees trends and constants, but not the contexts of time, place, and policy—that is, those determinants of tactics that are unknown in advance of war and those variables in each commander’s equation that change from battle to battle, region to region, season to season.

[…]

Peacetime commanders are the professional ancestors of men who fight. In the Navy’s inner circles we honor leaders such as William Moffett, Joseph Reeves, and William Pratt who helped prepare for our battles, but who were never privileged to lead them. Charitably, we forget others—officers who were devoted to inspections, paperwork, freshly painted hulls, and elegant wardroom appointments.

[…]

Having been so heavily committed over the years to widely dispersed operations in small detachments around the world with the aim of preventing or containing war, the U.S. Navy of today will be ill-prepared to fight as a coordinated fleet of many ships.

[…]

A fleet fights on the momentum of two flywheels. One is fleet doctrine; the other is stability in the fighting force. Woe is the fleet that is sent into battle with neither.

[…]

Mission and forces should match hand and glove. The U.S. Navy invented task forces years ago to coordinate the two. The task force is a marvelous concept—an assembly of just the right forces in the right numbers to carry out a specific task.

[…]

The basic premise of naval strategy is that the destruction of the enemy’s fleet opens all doors. In practice, a great battle for command of the sea seldom occurs unless both sides choose to fight. What Clausewitz said of war applies here to decisive naval battles—that the decision for war originates with the defense, not with the aggressor; the ultimate object of the aggressor is possession, not fighting. Naval history is replete with examples of one side deciding to avoid decisive battle, which helps explain why there have been so few battles at sea.

There was a time when a group of ships was kept in port as a “fleet-in-being.” The idea was to prevent the defending force from being defeated without having inflicted enough damage on the attacking force to deny them the opportunities they could otherwise enjoy after winning. A survey of modern naval weapons suggests that keeping a fleet-in-being is more difficult than it once was, but that it is not yet an outmoded strategy in conventional war.

[…]

Yet, these operations are unique to World War II. From the centuries spanning Hannibal’s campaign and Tsushima, one searches in vain for an example of an overseas operation succeeding on the ground without the attackers having gained control of the intervening sea.

[…]

In the European and Central command regions, from 1970 until 1990 the average of new crisis responses involving naval forces was 2.9 a year. From 1990 to 1996 the average was 5.0 crisis responses a year. (In all, there were 91 crisis actions over 27 years, or an average of 3.4 a year.) At the same time, the active fleet shrank by 40 percent. Perhaps even worse, the duration of each crisis increased by more than an order of magnitude, from a median length of less than a month through 1989 to more than a year from 1990 on.

[…]

The shore facility is more survivable in theater war, but in general war it will be pre-targeted, so a mobile afloat facility is preferable. Airborne command posts are survivable, but ingenious provision must be made for their logistic support after a matter of only a few hours. A seaplane command post—a craft that can sit on the water but also move quickly to avoid attack—is a better way to combine survivability and greater logistic endurance.

[…]

What have been the options of the inferior navy? One is to maintain a fleet-in-being, as the Germans did with their High Seas Fleet after Jutland and the French often did with their sailing navy. But the competence of an inactive navy withers away and over time the superior navy will be able to take successively greater risks to exploit its command of the sea.

A second possibility is to try to whittle the enemy down to fair odds in decisive battle. That was the wartime objective of the High Seas Fleet before Jutland and the training objective of the Imperial Japanese Navy before World War II. The High Seas Fleet developed tactics that emphasized deception and trickery to gain an advantage in battles between small detachments. The peacetime Japanese developed tactics appropriate to inferiority—and later exercised them from habit during the war, when Japan actually enjoyed superiority.

A third approach, when the ratio of forces gives the smaller fleet a chance, is to catch the enemy with a temporary vulnerability and exploit it to gain command of the sea. The inferior navy cannot base its actions on enemy capabilities, but must be prone to accepting risk and willing to act on an estimate of enemy intentions. Doubtless that was what Nimitz had in mind before the Battle of Midway, when the American fleet was outnumbered. His orders to Fletcher and Spruance were to fight on the basis of calculated risk. 5 An inferior navy should put unstinting emphasis on superior scouting. Nimitz and his two combat commanders based their battle plans on good intelligence from code work. To attack effectively first, an inferior force must overcome its limitations by some combination of initiative and surprise.

A fourth approach is to establish local superiority, as the Germans did in the Baltic during much of World War II and the Italian navy and air force did at times in the Mediterranean.

The fifth possibility for an inferior navy is simple sea-denial. The goal of sea-denial is to create a vast no-man’s-land. Why should command of the sea be necessary for a continental power to achieve its purpose on land? Denying the coast to the enemy may suffice. The U-boat campaign against British shipping in two world wars was an unambiguous attempt at sea-denial in the service of continental aggrandizement. The British submarine, surface, and air campaign against Rommel’s sea line of communication is another, less pure, example. Sea-denial, extended long distances at sea by air and submarine attacks, was the core Soviet naval strategy against NATO and the U.S. Navy.

[…]

There is another possibility that Mahan’s disciples tend to slight. The continental power may achieve a maritime objective by action on land.

[…]

In World War I, when France survived with Britain’s help, Germany had to base its fleet and U-boats in the North Sea. In World War II, after France was overrun, the U-boats were unleashed from the Bay of Biscay, and if Hitler had chosen he could have devastated Allied shipping with aerial attacks from French airfields.

[…]

Sir Francis Bacon’s hoary dictum, “He who commands the sea … may take as much or little of the war as he will,” has to be considered next to Clausewitz’s observation that when one takes little of a war, one is in peril of giving the enemy what he seeks.

[…]

If the strategic commander has an abundance of forces available, as was the case at Grenada, time and timing come to dominate the calculations. The assembly and deployment of more force always takes more time, and time is as precious to strategists as it is to tacticians.

[…]

There is another way to look at forces vis-à-vis mission: for the strategic commander to tailor the task to an existing force. The advantage of this is coherence of operations.

[…]

The term “correlation of forces” is so concise and expressive that it is a wonder how military officers have been able to communicate without it.

[…]

Most tacticians accept Thomas Carlyle’s philosophy that “the history of the world is but the biography of great men,” and they reject George Orwell’s notion that leadership is only doing what is expected of a nominal leader—merely “shooting an elephant” to please the crowd.

[…]

The untried commander should assume that he or she has average skill and not presume that he can overcome disadvantage with talents he may not possess. If a commander has talent, it will grow. A good reputation may be worth more on the battlefield than good attributes, and a bad reputation will mute even the best attributes. That is why Napoleon sought “lucky” generals.

[…]

A Navy study in the 1960s concluded that ASW ships escorting military convoys across the Atlantic could easily run out of torpedoes by firing at false contacts—a prognostication that was corroborated during the Falklands War, when the British navy fired hundreds of ASW weapons against an effective Argentine order of battle that contained only one submarine. After the U.S. Navy’s study, torpedo magazine capacity was tripled in the ship class involved. Tactics are affected when there is a real danger of running out of weapons—missiles, for example.

In the October War of 1973 the Israeli navy’s fast patrol boats were able to close and sink Egyptian craft that carried missiles with nearly double the range of the Israelis’ own by inducing the Egyptians to empty their missile magazines without effect.

[…]

It is important to assess fuel capacities in battle planning. The Battle of the Eastern Solomons in August 1942 gave us a memorable example of what happens when this area is neglected. Instead of three carriers, Fletcher had only two in the battle, because he had sent the USS Wasp south to fuel. She missed all the fighting and was sunk by a submarine soon after. Tactical endurance hardly ever enters into amateur force correlations, and, being a distraction, an aggravation, and a great source of friction, it is rarely given the place it deserves. Knowledge of the enemy’s endurance deficiencies can lead to a decisive tactical advantage, as Togo demonstrated at Tsushima.

[…]

A theme of this book is that sea battles differ from land battles because there is less influence of geography at sea. The closer the battle is to land, the more the shape of the land and the continental shelf change this general truth.

Because of the way that CRAM lights up the night sky and how much noise it makes, it is hard to keep its operation secret

April 8th, 2026

David Hambling explains why U.S. Gatling guns are not stopping Iran’s Shahed drones:

The Centurion C-RAM (“Counter Rocket, Artillery and Mortar”) was first deployed in Iraq in 2006 and is a land-based variant of the original Phalanx CIWS (“Close In Weapon System”) used by the Navy since 1980. It is the last line of defence when urgent action is needed to prevent casualties. The land version is a self-contained unit weighing around 24 tons and costing something over $4 million.

As the name suggests, C-RAM was introduced to protect bases against rocket, artillery and mortar fire. It has an integrated radar which tracks incoming projectiles as well as the stream of rounds fired by the 20mm M61A1 Gatling gun to put them on target.

The cannon is the same as that carried by F-15 and F-16 fighters. Its distinguishing feature is its phenomenal rate of fire, the six electrically-powered spinning barrels selectively firing 3,000 to 4,500 rounds per minute – that is 50 to 75 per second — producing a sound like a buzzsaw, often rendered as “Brrrrt.”

While the Navy version fires solid tungsten projectiles, CRAM uses the M940 Multi-Purpose Tracer – Self-Destruct round. This weighs 3.5-ounces/99 gram and consists of a tungsten cone to punch through the target skin, and a body which explodes in a dense mass of fragments inside the target. “Tracer” means the round produce a visible glow, and in operation the stream of projectiles appears as a bright ribbon reaching out towards the target. Automated tracking shifts aim until that ribbon overlaps the target.

The “Self-Destruct” part means that the rounds automatically explode at a range of around 2,300 meters if they miss the target, an effect also highly visible on videos of CRAM engagements. CRAM is a point defense system placed to protect high-value assets. If a drone strikes just couple of miles away the operators can only watch.

CRAM has a magazine of 1,500 rounds. This sounds like a lot, supplying 30 one-second bursts of 50 rounds each. But it is only enough for 10 two-second bursts at the higher rate of fire. It reportedly takes some 30 minutes to reload CRAM manually with 15 boxes of ammunition each weighing around 60 pounds.

Each M940 round costs $168, so a 150-round burst costs around $25k, comparable to the price of a Shahed.

Because of the way that CRAM lights up the night sky and how much noise it makes, it is hard to keep its operation secret.

[…]

What we do know is that the reported success rate against rockets and mortar shells in Iraq was reportedly 70-80% with an average of 300 rounds per engagement. These are relatively convenient targets because, although they are moving fast, they come in on a very predictable trajectory and they descend from high in the sky making them easy to pick out on radar.

Tackling drones may be more difficult. Being made of composite material rather than metal, they may have a small radar reflection. And Shaheds can fly at extremely low level, sometimes at under 100 feet with a flight path that takes them between buildings. The level of background clutter will make radar tracking challenging.

[…]

Unlike rockets and artillery, Shaheds do not need to fly on a predictable path. Some of the Russian versions automatically carry out evasive maneuvers when they sense a threat. As the videos show the stream of rounds can be seen and potentially evaded. This dodging would at the least increase the number of rounds needed for a kill. Russian Shaheds are also accompanied by numbers of low-cost Gerbera decoys to distract and deplete defenses. Iran does not yet seem to have either capability.

[…]

The U.S. Army only acquired about 20,000 rounds of M940 this year, which one weapon could burn through in five minutes of firing.

Many people in this country believe secret weapons are proper public news

April 7th, 2026

Fleet Tactics and Naval OperationsFleet Tactics and Naval Operations explains the trends and constants of technology:

DePuy, in unpublished papers, accumulated evidence that in ground combat the impact of a new weapon upon the outcome of a war usually has been local and almost always has been transitory. He believed that a technological surprise by itself never has won a war on land, but that technology accompanied by a tactical revolution has. Napoleon’s tactical use of mobile artillery was revolutionary; the field artillery itself was not new. It is ironic that the Germans exploited tanks so effectively with their Blitzkrieg, for one of their victims, the French, possessed more and better tanks, and another, the British, had invented them. In these instances the new tools, artillery and armor, were no secret at all. In contrast, when tanks were a surprise, first used in substantial numbers by the British at Cambrai in World War I, the British forces achieved local successes but could not exploit their new weapons. Some argue that the British prematurely squandered tank technology before the accompanying tactics had matured.

[…]

Because there are fewer big battles at sea, the potential for decision by technological surprise is greater. At least one weapon is comparable in decisiveness to cryptanalysis, which wrought the great increase in Allied scouting effectiveness: it is the kwi-suns, or turtle boats, of Korean Admiral Yi Sun-Sin, which in 1592 helped win two decisive battles against the Japanese at Pusan and in the Yellow Sea.

Another secret weapon sprung long after its prewar invention was the Japanese Long Lance torpedo. As late as the summer of 1943, the U.S. Navy did not know exactly what the Japanese weapon was or why it had been so effective. The Long Lance had been developed in the early 1930s, and Japanese cruiser and destroyer men had trained extensively with it. American scorn for Japanese technology takes much of the blame for the U.S. Navy’s overconfidence at the start of the Pacific war, which was almost as foolhardy as German and Japanese overconfidence in the immunity of their own ciphers.

Then there is the atomic bomb. Although it was not specifically a naval weapon and not numerous enough to be regarded as tactical, the bomb was the shocking weapon that administered the coup de grace to Japan in 1945. The science and technology took four years to develop, and only two bombs were built.

Is it possible to keep the development of an “ultimate weapon” a secret in peacetime? Evidence suggests that it is not possible, at least not in the United States. Many people in this country believe secret weapons are proper public news.

[…]

Here are some examples of weapons, mostly naval, that brought disappointment in World War II:

  • Magnetic influence mines. Germany introduced them against shipping in the estuaries of the British Isles. They were effective, but they were used prematurely. As a result, they turned out to be vulnerable to countermeasures.
  • Magnetic exploders in American torpedoes. Developed before the war, they worked badly and were a great setback to U.S. operations. In a short war, American torpedoes would have been an unmitigated disaster. The British and Germans also experienced early problems with their sophisticated torpedoes.
  • Proximity fuzes. For much of the war they were restricted to use over water out of fear that the Germans would recover one and adopt the technology against U.S. strategic bombers.
  • Night fighters. These were highly effective, but there were too few of them to be decisive.
  • Submarines. They had a powerful impact, but their role against warships was well recognized before World War I.
  • Sonar. This was a crucial response to the submarine, developed in secrecy. It was not enough to neutralize the threat.
  • “Window,” the strips of aluminum foil used to jam enemy fighter-direction radars. The Germans had window early in World War II, but they delayed its application until the Allies used it in the bombing of Hamburg in July 1943. Both sides appreciated the fact that window was a doubled-edged tool of war—of value to both sides.
  • Jet aircraft, V-1 and V-2 missiles, and snorkeling submarines. All arrived too late in the war to have much effect.

Here are some reasons that new weapons, whether secret or known, do not always deliver what they promise:

  • Production limitations, as with magnetic mines
  • Testing limitations, as with torpedo exploders
  • Great complexity, requiring skilled operators and integration into fleet tactics, as with radar and night fighters
  • Great simplicity, threatening adoption and exploitation by the enemy, as with window
  • The risk of failure after introduction, as with the U.S. magnetic torpedo
  • Exaggerated expectations, as with sonar
  • The penalty for maintaining secrecy during a lengthy period of development, as with Nazi Germany’s secret weapons

[…]

There are many examples in which important improvements in combat capability have been hidden. One is the rifling of gun barrels. Another is the improved fire-control systems in dreadnoughts. New engines barely can be detected from an aircraft’s appearance, but they can vastly change the plane’s performance. Changes in computer reliability or cryptology or in scouting systems in outer space are invisible, at least to an amateur observer.

Karl Lautenschlaeger asserts that the most important characteristic of the Soviet Oscar-class submarine was not its great size, but the likelihood that its missiles were guided by space-based sensors.

Submarines that depend on acoustic stealth are in a continuing competition to operate more quietly than the enemy; the quieter they become, the more “invisible” they are.

[…]

Vannevar Bush once said that the unity of decision under a totalitarian regime was a recipe for making colossal technological mistakes, whereas the prevalent confusion of decision-making in a democracy was more efficient. He could not have anticipated the tortuous system of procrastination that characterizes modern American defense procurement.

[…]

Usually more than one piece of technology is required to create a revolution. Sail and cannon together replaced the oared galley. Steam power alone was not enough to replace the ship of the line; it took the steam engine, the screw propeller, and the metal hull all together, which in turn made possible the big gun and the marriage of rifling, breech-loading, and an effective fire-control system. Big aircraft carriers were nothing without powerful aircraft engines to lift bomb-loads worthy of the name, and big aircraft required powered elevators, catapults, arresting gear, and the science of long-range navigation over water.

[…]

Even the Polaris submarine, the embodiment of a naval revolution as neat and swift as we are apt to see, would not have arrived without the inspired marriage of two technologies, nuclear propulsion and solid-fuel rocketry; and the work of two great technical leaders, ADM Hyman Rickover, USN, and VADM William F. “Red” Raborn, along with Arleigh Burke, a Chief of Naval Operations who understood warfare, politics, and the value of swift action.

[…]

It is impossible to design the perfect weapon for large-scale production and employment without practicing with it; even then, it takes three or four generations of hardware before a weapon realizes its full potential.

Does gun ownership predict homicides taking race into account?

April 6th, 2026

If you plot gun-ownership vs. gun deaths, they correlate, Emil Kirkegaard notes, but that includes suicides. If you plot gun-ownership vs. homicides, they don’t. The real question is, Does gun ownership predict homicides taking race into account?

But then again, we know that homicide rate is mostly related to which % of the state is Black. The leftists are trapped. To show that gun ownership causes homicides — how could they not? it’s an effective and easy to use method — they need to control for the confounders. But that would mean doing regressions and seeing that Black% is the main variable, a big no-no.

[…]

Overall, though, it does seem like more guns means more homicides in general, net of demographics, and our county-level analyses back this up, just not entirely convincingly so.

Great constants in naval warfare

April 5th, 2026

Fleet Tactics and Naval OperationsAfter discussing great trends in naval warfare, Fleet Tactics and Naval Operations goes on to discuss great constants. On maneuver:

One problem of combat theory is how to define the beginning and end of a battle. Does the exchange of lethal force—firepower—open the battle? Consider the story of the cobra and the mongoose, told by Norbert Wiener in his book Cybernetics. The mongoose has the peculiar ability by some combination of mental and physical agility to stay ahead of the cobra’s capacity to strike. At the right moment the mongoose attacks behind the cobra’s head and the fight is settled. Did the battle consist of one leap by the mongoose? No. Nor does combat begin when the first shot is fired.

[…]

In a proper battle, firepower is preceded by maneuver, which bears on the outcome. In Mahan’s words, tactics is “the art of making good combinations preliminary to the battle as well as during its progress.”

[…]

We know the situation today: with a potentially huge battlefield and fast-acting weapons, maneuvers of even the most agile ships appear to be carried out at a snail’s pace.

[…]

In peacetime tacticians usually have overrated the wartime advantage of more speed in combatant ships. High speed is expensive in money, weight, and space. Peacetime planners too often overlook the tactical reality that a formation is tied to the slowest ship in the force, whether due to its design or incurred through malfunction or damage.

[…]

Neither the hydrofoil nor the surface-effects ship has proven its case; the speed of these vessels brings too many penalties in its wake.

[…]

Uhlig points out that carriers must be swift to operate aircraft. It is fascinating to speculate what their speed ought to be if this were not so. The question is not idle: we may see the widespread use of very short takeoff and landing (VSTOL) aircraft in the future. The cost penalty of vertical lift—which is the VSTOL’s greatest liability—could be offset substantially by reducing the propulsive power of the entire formation. We should remember that with half the propulsive power a ship can travel about 80 percent as fast. In addition, speed creates noise in the water, and noise draws submarine missiles.

[…]

History tells us that that extra bit of speed in ships and speed and maneuverability in aircraft is dearly purchased and has not increased in fifty years.

On firepower:

At sea the essence of tactical success has been the first application of effective offensive force. If the tactician’s weighty weapons substantially out-range the enemy’s, then the objective is to stand outside effective enemy range and carry out the attack with sufficient concentration of force to destroy the enemy. If the enemy out-ranges the attacker, then the tactician’s aim is to survive any blows with sufficient residual firepower to carry out the mission.

It is all the more important now for a tactical commander to have the means to concentrate effective firepower and deliver enough of it to accomplish the mission before the enemy can bring decisive firepower to bear. Without such means, one should not wish to engage the enemy, for the attacker is likely to lose with very little to show in damage to the enemy.

The second great constant of offensive force applies here: Other things being equal, a small advantage in net combat power will be decisive and the effect will be cumulative. The necessary margin of superiority, however, widens when the enemy seems likely to deliver a first, but inconclusive, attack. An inferior force cannot assume a defensive position and exact a substantial toll, as can be done in ground combat. An inferior fleet must be disposed to risk and must find a way to attack effectively first. Otherwise, it should be ordered to avoid battle and to adopt a strategy of evasion, survival, and erosion, which it must hope to achieve with skill and good fortune.

[…]

Our own numerical estimate is that superiority in net combat power of four to three has been conclusive at sea, except in the case of an effective enemy first attack. An advantage of three to two will crush the enemy.

[…]

Another recurring tendency, perhaps common enough to be called a constant, is to overestimate the effectiveness of weapons before a war. The abysmal ineffectiveness of naval gunfire in the Spanish-American War came as a shock. By 1915, after ships’ fire-control problems had been largely straightened out, ten or twenty minutes of accurate gunfire was conclusive. Nevertheless, at Jutland the High Seas Fleet escaped destruction because the British battle line was unwieldy, the German fleet maneuvered skillfully, and smoke obscured the scene of action.

Before the Pacific carrier battles commanders were too sanguine about the effectiveness of air power. And the chaotic night surface actions did not at all reproduce the clean, decisive battles that had been played out in prewar board games because firepower was not as effective as expected.

This rule abides: Watch for the fog of war, and do not underestimate the propensity of the enemy to survive your weapons. In the next war at sea we will see ships with empty missile magazines and little to show for the expenditure of what should have been the decisive weapon.

When Admiral Burke, the last of our World War II tacticians, was asked what he would change in the new class of guided-missile destroyers—his namesake, the Arleigh Burke class—he said he would add a brace of cutlasses.

On counterforce:

Another constant of maritime warfare is that navies are difficult to replace. For this reason ships of the line did not engage forts with the same number of guns, battleships did not venture into mineable waters, and aircraft carriers did not attack airfields that based similar numbers of aircraft.

[…]

Compared with damaged aircraft carriers, damaged airfields can be reconstituted quickly. In conventional war, there is less possibility of concealment, survivability, and recuperation at sea than on land. The compensatory virtues of warships have been their greater mobility and potential for concentration.

Should nuclear war come, it will alter these generalities. Surface warships will be more durable than land-based forces because of the capacity for both strategic movement away from the threat and for tactical movement out from under a missile attack. The capacity for survival of submarine-based submarine-launched ballistic missiles (SLBMs) through concealment exceeds that of land-based intercontinental ballistic missiles (ICBMs). Nuclear war also changes the replacement equation: conventional naval forces are more difficult to replace than conventional land-based systems, but in nuclear war, when no warheads are replaceable, this liability disappears altogether.

On scouting:

Naval commanders have always sought effective scouting at a range consistent with their weapon range. That is, they have sought data about enemy forces far enough away—or soon enough away, remembering the time-movement relationship—to deploy for effective offensive and defensive action. And the data have included a plot of the commanders’ own forces. An amateur who imagines a chessboard war cannot conceive of the frustrations of keeping this plot. It is not rare in peacetime exercises for a commander to target his own forces. Every professional should reacquaint himself or herself with the hazard and reread Morison’s detailed accounts of the Solomons night actions, including the Battle of Cape Esperance, in full and sobering detail. The choice of tactics must be compatible with force proficiency. Unpracticed, widely dispersed forces on a modern battlefield that is dense with long-range missiles run great risk of self-destruction. Some planners assert that the widespread use of the global positioning system (GPS) will end fratricide. If so, then GPS will have changed all previous experience in war at sea.

The great constant of scouting seems to be that there is never enough of it. In the days of sail commanders deployed a line of frigates ahead to conduct strategic search (in those days the great naval problem was to find an enemy at sea).

[…]

Without enough frigates, fleets under sail could be caught in disarray.

[…]

A good guess is that the next “radar” will be small, unmanned vehicles, especially aerial devices. Yet, the difficulties of integrating these into a scouting network should not be underestimated.

[…]

At sea, better scouting, more than maneuver, as much as weapon range, and often as much as anything else, has determined who would attack—not merely who would attack effectively, but who would attack decisively first.

On command and control:

Generally, when he or she is defending, a good commander reinforces weakness; when attacking he or she reinforces success.

How does this constant of tactics apply today? It means that on offense, modern networking permits a highly coordinated strike in time and space at a critical point from widely dispersed forces. After damage assessment, initial success can be followed with other deliberate, measured attacks. That is the essence of the American operations called dominant battlefield awareness and precision strike.

It also means—and this is what needs the greater attention—that on defense, when the initiative is the enemy’s, the formation and C2 doctrine should be designed for rapid, independent response by any ship at the instant it is threatened.

[…]

After one of his first engagements then-commander Arleigh Burke wrote in his after-action report, “There is no time in battle to give orders. People must know what they do before they go into battle.”

[…]

The time killers are lethargy, befuddlement, physical exhaustion, and disintegrating morale. Most likely many more disastrous tactical decisions than the history books tell us have been made by leaders whose spirit was used up and by fighters who were exhausted.

[…]

Burke has been quoted many times as saying that the difference between a good leader and a bad one is about ten seconds.

[…]

Tactical complexity is a peacetime disease. After the transition from peace to war, a marked simplification of battle tactics occurs. The tactical theorist underestimates the difficulty of executing complex operations in the heat of battle, and military historians are too quick to point out opportunities that could never have been exploited.

[…]

Cleverness, ingenuity, and complex maneuvers work best for solo performers such as submarines and small units that can be highly trained.

[…]

Since the enemy can be expected to know about anything that has been practiced very much, complex fleet tactics must work even when the enemy is aware of them.

[…]

U.S. naval warfare publications should compare in tightness, focus, and readership with the old fleet tactical publications that preceded them. Articles on tactics should dominate Naval Institute Proceedings, as they did in the period from 1900 to 1910. The hard core of the Naval War College curriculum should be naval operations, as it was in the 1930s. War games should stress not merely training and experience but the lessons learned from each game’s outcome, as in the 1920s and 1930s. In intellectual vigor our modern tactical writing should compare with the best in the world.

People who understand complex systems also understand the importance of minimising that complexity wherever possible

April 4th, 2026

Explaining tech debt is, the evidence would suggest, impossible:

Like many I’ve seen archaic systems where something that should take an hour might take a week. The trouble, as anyone who’s ever been in this situation can attest to, is that non-technical managers invariably fail to understand the problem.

Of course the standard claim at this point is that engineers are just bad at communicating. They simply need to re-express their ideas around refactoring etc. in terms of ‘value to the business’ or some such. But I’ve never seen this work. Instead I’ve seen the same thing over and over: people who understand complex systems also understand the importance of minimising that complexity wherever possible; people who have never understood a complex system in their life never ever grasp this and cannot be convinced.

Imagine you’re a dumb non-technical manager. You think coding is basically magic. Sometimes when you ask the engineers to add a feature (which is like casting a spell), they give some weird story about how they could cast the spell quickly, but it’s better to do so slowly to prevent their magic becoming impotent and making future spells take longer. This is obviously unconvincing; it sounds like something slackers would say. So why are we surprised when managers who think like this fail to grasp the importance of controlling tech debt?

The ascendancy of the ship lasted a mere moment

April 3rd, 2026

Fleet Tactics and Naval OperationsFleet Tactics and Naval Operations discusses great trends. On maneuver:

During the age of fighting sail, ships used to stay in a tight column for cohesion and sought to be to windward or leeward of the enemy. Battleships maneuvered to cross the enemy’s T. Picket submarines are pre-positioned to scout and attack in waters through which the enemy may pass. Aircraft are put on a CAP station so they can be vectored to a target or can maneuver on their own to attack. Deck-launched interceptors are in a state of readiness that is predetermined to give them time to move into a position for attack. In each case the emphasis is on the timely positioning of forces, which enables one to scout and shoot better than the enemy.

On firepower:

The most conspicuous trend in the history of warfare is the increase in weapon range, from two miles or so in the days of fighting sail to fifteen miles or more in the era of the big gun, three hundred miles during World War II, and six hundred miles or more today.

[…]

The long guns of sailing ships were effective at only about three hundred yards, and carronades were limited to an even shorter distance. Around 1900, before continuous-aim fire, it was estimated that a battleship would take fifty minutes to reduce an enemy to impotence at a range of 2,500 yards. By 1914 it would take only ten minutes, in good visibility, to put an enemy out of action at ten thousand yards.

[…]

In World War II, radar ranging changed that. Gun ballistics became so accurate, with refined fire-control systems, that even medium-caliber 5-, 6-, and 8-inch guns could be fired accurately almost to their maximum range. 9 In the half-century from 1898 to 1948, the effective range of naval weapons increased about tenfold.

The increasing effectiveness of shipboard gunfire was obscured by the growing use of aircraft for bombing early in World War II.

[…]

In the 1930s engineers designed land-based B-17 bombers specifically to carry out attacks on warships at great range. Yet, horizontal bombers turned out to be almost totally ineffective; they had difficulty finding naval targets at long range and experienced even more difficulty hitting them at any range. Naval aircraft of much shorter ranges proved to be the best ship-killers.

[…]

After concluding that, even omitting nuclear weapons, the lethality of weapons has increased by five orders of magnitude—that is, 100,000 times—between the middle of the sixteenth century and the present time, Dupuy uncovers a paradox. While weapon lethality on the battlefield grew, the rate of personnel casualties per unit time shrank. Why? One prominent reason was the increased dispersion of troops on the battlefield.

On counterforce:

Even in their heyday, armor and hull strength were rarely thought of as offering as much security against shells as deep bunkers in the ground. Armor was a dilatory device, used to forestall enemy firepower until one’s own offensive power took effect. In those days, there was much discussion of the division of a ship’s displacement between firepower, staying power (protective armor), and propulsion power. Before and after World War I, each country had its own style: Americans sacrificed speed for guns, armor, and radius of action; the Germans opted for staying power; the Italians emphasized speed; and the British (like the Americans today) incorporated habitability for extended worldwide deployments in big ships.

In the war games of the battleship era, the typical first-line dreadnought had a life of about twenty major-caliber hits; the pre-dreadnought had a life of twelve hits. The loss of firepower and maneuverability was treated as a nonlinear function of the number of hits—that is, a dreadnought suffering ten hits in U.S. war games would lose more than half its firepower and speed.

[…]

American fears centered on the Japanese advantage in line speed (twenty-three knots for the Japanese versus eighteen knots for U.S. forces), the possibility of surprise, and the lurking danger that the U.S. Fleet would be too crippled after eliminating the Japanese to fulfill its mission. (In war games, this was the relief of the Philippines.) The Japanese hoped that their submarines would inflict initial damage, their aircraft and Long Lance torpedoes would effect further damage, and that their Mogami-class light cruisers, retooled secretly with 8-inch guns, would significantly augment the battle line. There were, as we know now, catastrophic surprises to both sides after the war in the Pacific commenced.

[…]

In World War II defensive weapons assumed unprecedented prominence. By 1942 a flood of AAW weapons was being installed, with radar sensors, deadly proximity fuzes, and new, capable fire-control systems to lead and hit fast-moving targets. By 1944 attacking aircraft faced a veritable curtain of fire. In the last year of the war, modern surface combatants had redressed the balance of power they had lost to naval aircraft.

The ascendancy of the ship lasted a mere moment, for at the end of World War II it was eclipsed by the atomic bomb, and armor was not effective as a protection from nuclear blasts. Cover and deception and the urgency of a first strike took on overwhelming significance. Air interceptors, AAW missiles, and ASW weapons were more than ever temporizing weapons. The American posture was all the trickier because the U.S. Navy could never attack first, certainly not with nuclear weapons. How to buy enough time to deliver a massive strike ashore was the tactical question.

Judging from the enormous Soviet naval effort to counter U.S. carrier task forces, the Americans were eminently successful. But they paid a price: with nuclear war in mind, they built ships without much survivability against conventional munitions. They concentrated on long-range defensive weapons—air interceptors and missiles—and neglected the guns and the modern close-in “point” defenses that were analogous to the 20-and 40-mm guns of World War II. They also neglected the development of new soft-kill devices—short-range systems that could not reach out far enough against nuclear weapons.

The Royal Navy followed a similar bent and neglected damage control and point defense. It suffered the consequences when its ships fought to retake the Falklands with conventional weapons.

By contrast, Israeli warships prepared for the 1973 war by developing soft-kill defenses against Syrian and Egyptian weapons so successfully that they all survived unscathed.

[…]

For example, infantry small arms exceeded artillery in producing casualties after the range and lethality of artillery rose dramatically. Often the second-best weapon performs better because the enemy, at great cost in offensive effectiveness, takes extraordinary measures to survive the best weapon.

We saw this phenomenon in the Falklands War. The Argentine air force lost only eight, or about 10 percent, of its aircraft to the British ships’ most expensive AAW defense, their SAM missile batteries (Sea Darts). The Argentine pilots knew that if they hugged the water the SAMs would be ineffective, and the British ships shot down most of the attackers with short-range weapons. Nevertheless, the “ineffective” SAMs were vital to the defense because they constricted the Argentine pilots’ maneuvering room, helped make the British close-in defenses more effective, and forced the pilots to drop their bombs at so short a range that sometimes the ones that hit had had no time to arm.

[…]

Dupuy estimates that between the Napoleonic Wars and the 1973 Arab-Israeli War the average density of troops on the battlefield was diluted by a factor of two hundred.

[…]

When dispersion is an important means of defense, small ships and distributed firepower are an important advantage.

[…]

It was defensive fighting power that decided whether a force should mass or disperse. Today if fleets comprise large ships with strong defenses, commanders mass them and fight the enemy off. If they have small ships or weak defenses they must disperse.

[…]

Tacticians should always remember that the reason for building survivability into a vessel is to gain time for the offense. Critics who talk about surface ship vulnerability ignore this. The less knowledgeable assume that expensive ships should stand up in combat forever; the wiser contend that big ships are not worth the money, and that if someday there is an alternative that delivers superior net force—that is to say, delivers firepower over a ship’s combat lifetime—they will be correct.

[…]

Defensive systems collectively act like a filter (not a wall or a Maginot line) that extracts a certain number of incoming aircraft or missiles. As it is able, a hull absorbs hits and enables the warship to conduct curtailed offensive operations.

World War II AAW weapons destroyed some air attackers and distracted others with a curtain of fire. Modern hard-and soft-kill defenses do the same.

Up to a point, the defense takes out a high percentage of the attackers. When the attack is dense and well coordinated, an active AAW defense will become saturated at a certain point, beyond which most missiles or aircraft will get through.

[…]

Two other trends bear mentioning. One is the growth of a tactical no-man’s-land, a region where neither side can operate its main force and where pickets (aircraft, submarines, and small-surface missile craft) will fight fierce subordinate engagements to create weakness or gather information. The no-man’s-land exists because defense needs room. In conventional war, battle space translates into time to react against attack. In missile warfare it may be that no defense is adequate and that space is needed simply to stay out of reach or to make it too difficult for the enemy to target moving ships.

A smaller no-man’s-land has long existed. In the past, daylight surface actions that used guns did not occur at less than two thousand yards: action was fatal before the range closed to that point. Battle lines did not expect to fight at ten thousand yards, the zone where destroyers lurked. Carriers did not want to approach other warships closer than one hundred miles. A miscalculation or an adverse wind would put guns within range, and it would all be over in fifteen minutes. HMS Glorious discovered this, and many more of the U.S. jeep carriers off Samar might have been sunk at the Battle for Leyte Gulf had Vice Admiral Takeo Kurita not lost his nerve and retreated with his overwhelmingly superior Japanese surface fleet.

The second is the growing vulnerability of ships in port. Ports have traditionally been havens for navies superior and inferior. Although few harbors have ever been absolutely safe from attack, the strategy of the nation that has the weaker navy has been heavily influenced by the consideration that a fleet-in-being could be reasonably safeguarded in port. But this has changed; the security of ports has diminished. Pearl Harbor, of course, marked the transition, as did several other striking if less well-known events. On the night of 11 November 1940, for example, a handful of torpedo planes from HMS Illustrious surprised the heavily protected Italian fleet at the port of Taranto. They put three of six Italian battleships out of action for six months and one for the rest of the war, and the Italian fleet fled to Naples. 14 After Sherman’s carriers struck Rabaul in November 1943, the Japanese navy was so stunned that it soon withdrew to Truk. Not much later, in 1944, carrier strikes penetrated Truk, and the Japanese, unable to challenge the United States at sea and completely frustrated by the U.S. Navy’s ability to concentrate overwhelming air power against any island bastion, withdrew into the western Pacific. Today, almost half a century later, ships are often safer outside of home port than in.

On scouting:

The dominant trend in scouting has been the increasing rate of search and the increasing range of reconnaissance, surveillance, and intelligence-gathering systems.

[…]

Double the range of the enemy’s attack aircraft and you quadruple the area to be searched. A barrier search—a scouting line—can sometimes cover the perimeter of this expanded area. The bent-line screen invented late in World War II to detect submarines in front of a carrier is an example. Still, tactical commanders cannot often be satisfied with a scouting line. For one thing, it is usually pervious: submarines that can approach submerged and launch missiles are a threat that seemingly springs from anywhere at or inside a missile range. For another, searches cannot always be continuous. In World War II, when scouts or patrol planes in tactical support were launched by the Japanese and Americans at dawn after a night without reconnaissance, they were never sure how far out the enemy might be found.

[…]

Recall the scouting line thrown out in advance of the World War I Grand Fleet. Its placement was not governed by gunnery range, but by calculating the time it would take to relay a signal to Jellicoe by wireless, plus twenty minutes to allow for the shift from cruising formation to battle line before the enemy closed to weapon range.

As we have noted, in warfare space is equivalent to reaction time. Now that missiles can approach at twice the speed of sound or greater, reaction time is so compressed that the scouting line must account for both missile range and the time it takes to act against air, surface, or submarine launch platforms.

Some authorities illustrate this with three circles or pie slices. The smallest is the region of control: any enemy inside it must be destroyed. The next is the region of influence or competition, something like a no-man’s-land. The largest is the region of interest: friendly ships must be prepared to deal with an enemy inside it. Scouting seeks targeting data in the first region; tracking in the second; and detection in the third. So the effect of the increase in weapon system range and speed has not been simply to increase the area in which weapons may be delivered, but also to expand the size of the battlefield so that it includes the entire region of scouting and preliminary maneuver.

The vertical dimension of the battlefield also has been extended—deeper beneath the surface to the seabed and higher above it to space.

[…]

Space will be an additional plane of action, as different tactically from the air as the air is from the surface.

[…]

The first wartime role of aircraft, on land and at sea, was scouting. Aircraft were so successful in this that the antiscout—the pursuit plane—was invented. In World War I all other aircraft roles were inconsequential by comparison. The same sequence of events is certain to hold in space.

[…]

Like antiaircraft fire in World War I, earth-launched anti-satellite systems are not the best countermeasure. Neither are the current means of cover and deception. As a direct result of the fundamental importance of scouting, “pursuit” systems in space will be invented to destroy surveillance satellites. Space bombers will follow some day soon.

On command and control:

The great deadliness of modern surprise attack can be illustrated numerically. When guns answered guns, a two-to-three disadvantage could not easily be offset by surprise. For example, according to Bradley Fiske’s model of exchanged broadsides, to gain equality the inferior force (call it B) would have to fire for ten minutes unanswered by A. That is about 60 percent of the time it would take A to eliminate B if both sides exchanged fire. For B to obtain a two-to-one advantage over A before A started to return fire, B would have to fire unanswered for twenty minutes, the military equivalent of the Chesapeake being caught unprepared by the Leopard in 1807. Compare this with the model of carrier warfare in World War II. If B, with two carrier air wings, could surprise A, with three, B would sink two carriers at a blow and have instant superiority. Coordinated modern missiles have the potential of inflicting similar shock on a fleet. A surprise attack of the scale from which a fleet might recover in the age of big guns will be decisive in a modern naval war.

If the short story works, you start way earlier

April 2nd, 2026

Ender’s Game by Orson Scott CardOrson Scott Card explains that his only “start-quick novel” was Ender’s Game:

I had had some traction with the novelet “Ender’s Game,” and I had already committed to its main character as the protagonist of Speaker for the Dead. I needed a novel version of Ender’s Game to properly set up Speaker, so readers of the EG novel would be prepared to pick up the story 3,000 years later. (Time dilation in lightspeed flight allowed frequent travelers to live through millennia.)

I already knew, from expanding Mikal’s Songbird into the novel Songmaster, that you don’t novelize a short story by tacking twenty chapters onto the end. If the short story works, you start way earlier, developing characters and situations leading up to the same climax and resolution that worked so well in the short form. (If they did not work well, why are you novelizing it in the first place?)

[…]

To show Ender’s childhood family, I handled it quickly by putting Ender in my own family, back when there were only three of us kids. In my family, my sister was eldest, and a four-year gap between me and my older brother made us anything but close. So Ender grew up with a hostile older brother and a protective and kindly older sister — both of whom had come close to being drafted themselves.

Every vile thing Peter did to Ender, my own brother had done to me. Every in-joke between Ender and Valentine was based on real memories shared with my sister. In this tiny cell, the parents seemed as distant as prison guards, quite unlike my own parents, who were in the main much more nurturing and involved.

Once Ender got to Battle School, he was placed in various armies led by somewhat older children. My most powerful understanding of military command came from reading Bruce Catton’s brilliant trilogy about the Army of the Potomac in the American Civil War. Lincoln’s frustrating search for an effective commander for the army that campaigned between Washington and Richmond became the semi-deliberate basis of all the bad-to-mediocre army commanders Ender came across.

So apart from trying to invent tactics for combat in a cubic enclosed space in zero-G (Shuttle astronauts confirmed for me that their own experiments in the cargo bay showed that I did OK with my thought experiments), I was relying on either my own life or powerfully-remembered history for my characters and their actions.

[…]

In my life I had never been a leader, as far as I was aware. But I had always been impervious to peer pressure, never aspiring to “coolness” and never achieving it, but always deciding what I wanted to do and then doing it. I always considered my actions in childhood and adolescence to be real — when I wrote, produced, and/or directed plays in college, often against faculty opposition, I regarded my plays as actual productions, fictional in content but real in the execution. When Ender never loses sight of the goal of Battle School, which was to win the war against the Hive Queens, it does echo my constant attitude that my scripts and productions were never “student work,” but real dramas and comedies for real audiences; my competition was not other students or even the variably talented faculty — my competition was Shakespeare and Oscar Wilde. I never came close to winning that competition, but in my mind, that was my playing field and my aspiration. I gave Ender that kind of ambition — he didn’t care about being top student, he cared about preparing himself and his best colleagues to face the Hive Queens in combat and destroy them, thereby saving the human race once and for all.

By mining my own psyche and memories of experiences and readings, I was able to write the novel with NO additional research and development. I wrote the early chapters in a week, getting Ender into Battle School. Then my publisher sent me on a brief signing tour for my novel Saints (published incompetently under a stupid title with an appallingly bad cover). This being before the invention of the laptop computer, I wrote nothing that week. But unconsciously, I was developing Ender’s story like mad. I got home and immediately got back to work. I wrote the rest of the novel, including Ender’s post-war transformation into the original Speaker for the Dead, in just under three weeks. I printed it out on my NEC Spinwriter and mailed it off to my then-editor at TOR, Harriet McDougal (married to the soon-to-be-famous Robert Jordan).