Military Terminology

Ambush	The destruction of three Roman legions in the Teutoburg Forest in 9 AD by Arminius is one of the most successful and consequential ambushes in history. Over 20,000 legionnaires and uncounted camp-followers were killed. It made the Rhine the high water mark of the Roman Empire in Europe.
To make a surprise attack on an enemy that passes a concealed position.
Booby Trap	During the Vietnam War, motorcycles were rigged with explosives by the NLF and abandoned. U.S. soldiers would be tempted to ride the motorcycle and thus trigger the explosives. In addition, NLF soldiers would rig rubber band grenades and place them in huts that US soldiers would likely burn.    Spike Board: The spike board is used with a pit and consists of a treadle board, one end of which is spiked. When a man steps on the treadle, the spiked end flies up striking him in the face or chest.
A booby trap is a device designed to harm or surprise a person, unknowingly triggered by the presence or actions of the victim.
Counter-attack	A counter-attack is a tactic used in response against an attack.
Counter-offensive	Soviet counter-offensive of Winter 1941 in which the Russians drove the Germans away from Moscow is a fine example of a successful counter-offensive. Stalin had been transferring fresh, well-equipped Soviet forces from Siberia and the Far East to Moscow. On 5 December 1941, these reinforcements attacked the German lines around Moscow, supported by new T-34 tanks and Katyusha rocket launchers. The new Soviet troops were better-prepared for winter warfare than their foes, and they also included several ski battalions. The exhausted and freezing Germans were driven away from Moscow on 7 January 1942. A counterattack is the tactical and sometimes smaller operational equivalent of the counter-offensive.
A counter-offensive is the term used by the military to describe large-scale, usually strategic offensive operations by forces that had successfully halted an enemy's offensive, while occupying defensive positions.
Blockade	United States blockade of Japan during the Pacific War of World War II in 1944–1945 is an example of a successfull blockade.
A ring of naval vessels surrounding a specific port or even an entire nation. The goal is to halt the importation of goods which could help the blockaded nation's war effort.