This term can be used over one subject or plural. It can also be used in past tense.
The term "troop" could also replace "peace", as it expresses the process or act of leaving.
"Our electricity just got cut off. We're going to troop out to the nearest store for batteries and candles until we get the situation fixed."
"It's late. It's time to troop out."
"Jack trooped out a long time ago. I think he went to his girl's house."
"I'm out. Troop!"