Definition

Hiding in the bushes and attacking when the enemy isn't expecting it, the military equivalent of fighting dirty but somehow still honorable. A surprise attack from a concealed position against an unsuspecting target.

Example Usage

The patrol was caught in an ambush and sustained heavy casualties.

Origin

Military tactics terminology; ancient warfare origin

Fun Fact

Well-executed ambushes can kill or injure disproportionate numbers of enemies because surprise eliminates defenses.

Source: Military Tactics and Guerrilla Warfare