American paratroopers jumped one after another, each of which weighed about thirty kilograms of equipment. But the green plains below them weren’t the expected Norman bochowe: the Germans flooded everything. “Those who jumped before me drowned, as did those who jumped after me, said John Taylor of 101e airborne division. I came across a small overhanging tongue of earth.”

Exactly 79 years ago, American D-Day began with a discovery: water was used as a weapon of war. The practice is as old as the world, but rarely used on such a scale, as it was in Ukraine on June 6 during the destruction of the Kakhovka dam on the Dnieper.

In Spain, two centuries before our era, Quintus Caecilius Metellus of Macedon was already deflecting the river, thereby bringing down its waves on the camp of the Celtiberians. In a panic, these sworn enemies of Rome took to their heels. The more sophisticated Persian engineers intervened in the irrigation systems of the Tigris to prevent the legions of Julian the Apostate from pursuing them.

Caesar, during the siege of Alesia, diverted the stream into one of the ditches dug around the citadel of the Gauls. Thus he killed two birds with one stone: he