This term hasn’t been in the original Club Penguin Armies since there were tons of servers to claim until The Club Penguin Rewritten Era.
So, what is an “Refugee Army” you ask? An Refugee Army in my terms, is an army that is currently active, but has no territory claimed.
As the current time, The Club Penguin Rewritten Army Central lend us a server to train on until Club Penguin Rewritten has more servers added in the future.
The server is Alpine.