military action

amphibious landing - a military action of coordinated land, sea, and air forces organized for an invasion; "MacArthur staged a massive amphibious landing behind enemy lines"
battle, engagement, fight, conflict - a hostile meeting of opposing military forces in the course of a war; "Grant won a decisive victory in the battle of Chickamauga"; "he lost his romantic ideas about war when he got into a real engagement"
blockade, encirclement - a war measure that isolates some area of importance to the enemy
defense, defensive measure, defence - (military) military action or resources protecting a country against potential enemies; "they died in the defense of Stalingrad"; "they were developed for the defense program"
electronic warfare, EW - military action involving the use of electromagnetic energy to determine or exploit or reduce or prevent hostile use of the electromagnetic spectrum
police action - a local military action without declaration of war; against violators of international peace and order
resistance - the military action of resisting the enemy's advance; "the enemy offered little resistance"
saber rattling, sabre rattling - the ostentatious display of military power (with the implied threat that it might be used)
sortie, sally - a military action in which besieged troops burst forth from their position
war, warfare - the waging of armed conflict against an enemy; "thousands of people were killed in the war"