campaign

空军发动了一场持续的轰炸行动。

The air force launched a sustained bombing ___campaign.

空军执行了一场持续的轰炸战役。

The air force conducted a sustained bombing ___campaign.

将军计划发动一场冬季军事行动，以突袭敌军。

The general planned a winter ___campaign to surprise the enemy forces.