As Americans discovered during 1861–1865, sustained land warfare is extremely costly in blood, T. R. Fehrenbach explains (in This Kind of War), and there has been a pronounced American distaste for such since:
It is probably no accident that no great American tacticians have evolved since the War Between the States, while at the same time American strategical thinking has been superb. Having been once in the forest, United States military men tended to see it rather clearly — they had trouble with the trees, but rarely got lost in them.
During 1941–1945, on the whole, German tactical execution of battle was superior to American; German officers and N.C.O.’s on unit level exhibited particular excellence in fighting. But throughout the war, American strategical planning remained first rate. While the Wehrmacht, under Hitler, floundered about from one crisis to another, American strategists never lost sight of their ultimate goal of destruction of the enemy.
Because Germans considered battle itself important, their technique was bound to be good, but they became lost in the trees, winning battles, losing the war. After the fall of France, Germany’s rulers never gave the Wehrmacht a clear, concise, strategical goal, because German planning never went beyond winning the West.
In the East, German planners again and again wasted their substance on transitory gains, while the Red Army never lost sight of its ultimate aim, which was to win the war politically as well as militarily. Significantly, while in 1942 Hitler struck deep in the Caucasus for oil, Russian military men always planned offensives for political effect, and for the control of populations. And while the Wehrmacht won many a tactical victory on the 1,800-mile Russian front, by 1942 it had no hope of controlling the Russian people, or of ultimate triumph.
Since the end of the Civil War, the United States has never been a massive land power. The ninety-two divisions raised in World War II never came close to matching either the almost four hundred of the Wehrmacht or the truly enormous field forces of the Soviets. But because the United States had Allies, such as Russians and Chinese, to keep the enemy heavily engaged on the ground, it was able to keep its commitment on land to a minimum.
If war is to have any meaning at all, its purpose must be to establish control over peoples and territories, and ultimately, this can be done only as Alexander the Great did it, on the ground. But because after the Civil War America’s Allies again and again took the terrible losses required to bleed the enemy, Americans gradually developed a belief in cheap victory.
In World War I, after Britain had suffered over 900,000 dead, and France more than 1,000,000, the United States threw her forces into the fray, to tip the scales at a loss of 50,000 killed in action.
In World War II, Russia lost more than 20,000,000 both military and civilian. Even agonized, stumbling France, in six weeks of 1940, lost more combat dead upon the field of battle — almost 500,000 — than did America during the entire war.
Without this sacrifice of our Allies all over the world, World War II could not have ended as it did, with the United States relatively unscathed.
More Americans died in thirty minutes at Antietam than died in thirty days of the Normandy beachhead.
But by concentrating to a large degree on sea and air power, the United States was able to add the strategic punch that knocked the Axis out of the war. Japan, particularly, as an island empire was peculiarly vulnerable to air and sea attack. And the main body of the Imperial Japanese Army, on guard against the Soviets in Manchuria, was never engaged by the United States.
It must never be forgotten that without the enormous holding power of American Allies, American industrial capacity of itself would not have been a determining factor. Even in 1944–1945, when the United States Army engaged an already strategically defeated Wehrmacht upon the ground of Europe, the effort strained the relatively small land combat power of America to the limit.