What new tactic of the war was introduced by Sherman's " march to the sea " ?

Answer 1

The tactic, while not really new to history, was terrorizing civilians.

http://www.sonofthesouth.net/leefoundation/shermans-march-to-the-sea.htm

Answer 2

The tactic is called scorched earth. It involves destroying anything useful to the enemy while advancing or withdrawing from the area.

Answer 3

Scorched earth is a much better answer than mine.

Thank you, Anonymous, for all of your answers this evening.