Quote Originally Posted by Penguine View Post
As KC stated, sign/countersign, although this sign/countersign is pretty deep. When I was enlisted we were given a chart with numbers down one side and letters across the bottom, and the boxes had words in them. If you were challenged with, for example A7, you would respond back with whatever word was in that box, lets say Chicken. On the other hand, if you were challenged with Chicken you would respond back with A7.

Have not heard any in play, but there are also things called duress words. Lets say the duress word/words are "chicken nuts". If you were under duress and talking on the radio or phone you would say something like "Did you know that chicken nuts are real? That should key in the person you are talking to you that something is not right. LOL.. bad example but it works for a simple explanation.
So when Glenn told Saul that one of the chicken had died, it was code for get back to Dunbar soon Peter has gone nuts?