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tactics; strategy
military operation; naval operation
試合に勝つための作戦を練り直すことにした。
I decided to rework the strategy to win the match.
敵の作戦を見破って反撃に転じた。
We saw through the enemy's tactics and went on the counterattack.
綿密な作戦会議を経てから行動に移した。
We took action after a thorough strategy meeting.