He was given a better job, to the position of " flagman."

他得到了一份更好的工作， 担任“旗手” 一职。

A " flagman" (flagman) is a person who sends signals or messages using a flag on a railroad line.

“旗手” （flagman）是在铁路线上使用旗帜发送信号或消息的人。

The flagmen had very important jobs because of course you need to make sure the train is on the right track, the right set of metal lines, especially when they're coming in and out of a railroad station.

旗手的工作非常重要， 因为你当然需要确保火车在正确的轨道上， 正确的金属线组，尤其是当他们进出火车站时。