战役 zhànyì military campaign
How to remember 战役: 战 war + 役 servant = military campaign.
Characters
How it is used
- A military campaign/battle - a large operation made of many engagements - 淮海战役 (Huáihǎi Zhànyì) the Huaihai Campaign.
- Bigger than a single 战斗 (zhàndòu, a fight/combat), smaller than 战争 (zhànzhēng, the whole war); it's the mid-level 'campaign.'
- Extended to big organized drives: 扶贫战役 (fúpín zhànyì) a campaign against poverty.