Serve in the army work in a factory

当兵在一家工厂工作

My great uncle used to serve in the army and fight up and down the country.

姑姥爷是一名军人,年轻的时候南征北战.

He was going to serve in the army when a famous investment company answered his application and invited him to join one of its investment projects.

他要去当兵时，回答了他的著名的投资公司的申请，并邀请他加入其投资项目之一。