Scorched earth
A scorched-earth policy is a military strategy that aims to destroy anything that might be useful to the enemy while it is advancing through or withdrawing from a location. Any assets that could be used by the enemy may be targeted, for example food sources, water supplies, transportation, communications, industrial resources, and even the locale's people themselves.
Scorched earth
Notable historic examples of scorched-earth tactics include the Russian army's strategy during the failed Swedish invasion of Russia, the failed Napoleonic invasion of Russia, William Tecumseh Sherman's March to the Sea in the American Civil War, colonel Kit Carson's subjugation of the American Navajo Indians, Lord Kitchener's advance against the Boers, the initial Soviet retreat commanded by Joseph Stalin during the German Army's invasion of the Soviet Union in the Second World War, and the subsequent Nazi German retreat on the Eastern Front.