In the military:
-Usually there is one station that is in charge of directing all the others,representing the commanding officer. This includes enforcing the use of proper voice procedure.Sub-units have their own subnets and the radioman at company HQ had to listen to two nets at the same time (to the tactical net and to the higher HQ).
-learn your phonetic alphabet by heart.
-If you really want to have some fun and depending on your level of realism (it's probably not worth it if you're playing in a room paintball style, but if you're doing it like the army with rucksacks and patrols and everything, I'd say go for it), it's possible to buy things like radio frequency scanners and eavesdrop on your opponent's VHF radio comms if he is not encrypted.
.If strong enough encryption is used, it is not going to be decrypted in a timely manner.
You can do certain attacks against VHF comms even if they are encrypted, but since your opponent is very unlikely to have artillery or want to spend a good deal of money on Electronic Warfare, a good encrypted radio should be all right.
(if there is demand, I will try and fetch some for you at a good price ---not army equipment, civviie stuff)
-Download this:it's the radio communicators' bible.
http://forums.army.ca/forums/index.php?topic=95281.0
have fun kids.
Source: worked as army signaller.