Answer: GUERRILLA WARFARE
Explanation:
Guerrilla warfare is a tactic where a force, usually smaller than the one they are attacking, uses natural obstacles such as trees and rocks to hound and goad their enemy, and lower opposing morale. The party employing the tactics usually has a much better lay of the land than the one they are fighting. The tactics consist of attacking in small parties, drawing out enemies, than quickly retreating, confounding the opponent.