noun
attacking forces; strike force
Military term for a unit or group assigned to carry out an attack.
攻撃部隊が敵陣に突入した。
The attacking forces charged into the enemy position.
防衛部隊 is a defensive unit, while 攻撃部隊 is an offensive strike force.
Compound of 攻撃 (attack) and 部隊 (unit, corps).