military radioman manuals have very little useful stuff for non-half-duplex forms of communication
but some conventions form out of necessity, over my two decades of doing ingame voice in stressful situations, such as preceeding all numbers with "count" so people then pay attention to the number. "count 8 infantry, 32m out, stacking on the one-storey"
little things that both reduce cognitive load and mean people are more likely to get the whole message, by telling them what's coming next