Vietnam War
In guerilla warfare, small units fight limited battles against an enemy force, set up ambushes, make surprise attacks, and then retreat to the countryside or blend into the local population. That also includes making it difficult for the enemy to operate by engaging in sabotage and harassing the enemy with lethal means such as the land mine and the booby trap. The communist troops more often engaged in guerilla warfare against South Vietnamese and American troops than the reverse because the communists knew of their weakness in conventional (large-scale) warfare.