Lastly get your runners together and talk shop.
Most important they need to know how to find those platoon and squad leaders. If they are wondering around the woods calling names, then they are going to get whacked.
What do the leaders look like (if possible pick someone who already knows them) are they wearing something distinctive.
Make sure they know the recognition signal(s)… Matter of a fact have them make up the signals based on what they have, not what you want....

I would like to start a little discussion on battlefield runners. I might call it a white paper if I have more schoolin'... besides that much writing isn't going to fit into this blog.
Anyway, I have gotten a smidgen of experience using runners in airsoft games, military simulations, and FTXs. (Usually Platoon to company strength.) And also enjoyed helping for several years at the D-day paintball game(s) in Oklahoma, assisting the Allied HQ (and now Axis High Command) run their battalion-plus...