It is a mistake to think that transport and communication facilities, industrial establishments and supply depots, which have not been destroyed, or have only been temporarily put out of action, can be used again for our own ends when the lost territory has been recovered. The enemy will leave us nothing but scorched earth when he withdraws, without paying the slightest regard to the population. I therefore order: All military transport and communication facilities, industrial establishments and supply depots, as well as anything else of value within Reich territory, which could in any way be used by the enemy immediately or within the foreseeable future for the prosecution of the war, will be destroyed.
Adolf Hitler, "The Nero Decree," 1945