Andrew Roberts dispels a myth (in Napoleon: A Life) about the Battle of Austerlitz:
Buxhöwden’s Russian force was split in two and fled east of the frozen lakes and across them, whereupon Napoleon had his gunners open fire on the ice. This incident led to the myth that thousands of Russians drowned as the ice cracked, though recent excavations of the reclaimed land at Lake Satschan turned up only a dozen corpses and a couple of guns.
Napoleon loved “to lie like a bulletin.”