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
During the Second Punic War in 218–202 BC, the Carthaginians used this method selectively while storming through Italy. After the end of the Third Punic War in 146 BC, the Roman Senate also elected to use this method to permanently destroy the Carthaginian capital city, Carthage (near modern-day Tunis). The buildings were torn down, their stones scattered so not even rubble remained, and the fields were burned. However, the story that they salted the earth is apocryphal.