拿破仑的原话：不想当将军的士兵不是好士兵。He is a bad soldier who doesn't dream of becoming a general

直译过来是：每个法国士兵的背包里都装着一只元帅的权杖。

如果非要把“不想当将军的士兵不是好士兵”译成英文，可以考虑“He is a bad soldier who doesn't dream of becoming a general.”