battle 侧重指战争中的一次较全面、时间较长的战斗，也指陆军或海军在某一特定地区进行的战斗，或个人之间的争斗。
war 是战争的总称，一般指包括多个战役的大规模战争。
campaign 通常指在一场大的战争中在某一地区进行的一连串有既定目的的军事行动。也可作引申用。
struggle 指激烈或时间持续长的战斗或奋力斗争。
war fare侧重指战争状态或具体的作战方法。
fight 最普通用词，含义广，指战斗、斗争或打斗。
combat 泛指军事行动，尤指小规模的战斗，甚至是格斗。
engagement 指交战，交火。
参考例句
1. We are campaigning for equal rights for women. 我们正在开展妇女拥有平等权利的运动。
2. Insist on a campaign day. 每天坚持一次运动；
3. And I talked about this throughout the entire campaign. 我在整个竞选中也讲到这两个概念。
英英解释
n.
1. a race between candidates for elective office
2. a series of actions advancing a principle or tending toward a particular end
3. several related operations aimed at achieving a particular goal (usually within geographical and tem
4. an overland journey by hunters (especially in Africa) v.
1. run, stand, or compete for an office or a position
2. exert oneself continuously, vigorously, or obtrusively to gain an end or engage in a crusade for a c
3. go on a campaign; go off to war
