I heard an American say the word (ends with "mate") which refers to "squadmate" in a military group. We was talking about words ending with "mate" then. (I scratched down "spunkmate" but apparently it is wrong spelling.)
I wondered if you could figure out what the word might be? I searched "synonym for squademate" but failed to find the exact word I want.
Edit: It is not "teammate" that I am looking for.