The answer is G **uerilla Warfare **and the question is about the War in the South , which took place in the 18th century. In October of 1780 , General Gates was replaced by General Nathanael Greene (on the American side). He introduced the new warfare. Instead of attacking Cornwallis (the British)all at once, he decided to use the hit-and-run tactic . Thanks to that, the British were forced to go back to Yorktown , as they were gradually pushed away towards the coast.
They used the guerrilla Tactics
Cornwallis was defeated at Yorktown through a coordinated military strategy by the American and French forces, which involved blocking his retreat by sea and laying siege to his troops. This decisive victory, achieved from September 28 to October 19, 1781, led to Cornwallis's surrender. The success at Yorktown effectively ended major military operations in the American Revolutionary War.
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