Comrades call each other "robe-sharers", a word that comes from "No Clothes".
Tips
culture
Each stanza opens 岂曰无衣？与子同袍。 'Who says you have no clothes? I will share my robe with you.' The soldiers go on to share their undergarments too and to mend spears and armour together. From it come 同袍 and 袍泽 'comrades in arms', and the 同仇 'shared enemy' of 同仇敌忾.
history
The 左传 says that when Wu took the Chu capital in 506 BC, the Chu envoy 申包胥 wept at the Qin court for seven days, until Duke Ai of Qin recited this song and sent troops to help.
