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.
La Libertad, El Petén
On 6 December 1982, during the "de facto" presidency of General Efraín Ríos Montt, over 200 people – including women, the elderly, and children – were killed there by commandos working as government forces as a part of the government's scorched earth policy.