1A planned method or set of actions (tactics/strategy) designed to achieve a goal in battle, business, negotiation, etc.
会議で新しい販売作戦を発表した。
He announced a new sales strategy at the meeting.
相手チームの作戦を読んで守備を変えた。
We read the opposing team's tactics and changed our defense.
問題を小分けにして取り組むのが効果的な作戦だ。
Breaking the problem into smaller parts is an effective strategy.
2A military operation: a concrete plan of action for deploying forces to achieve objectives (land, naval, air operations).
連合軍は夜間に奇襲作戦を行った。
The allied forces carried out a surprise night operation.
海上作戦の準備に数週間かかった。
It took several weeks to prepare for the naval operation.
作戦は天候次第で変更されることがある。
Operations may be altered depending on the weather.