obviously: get into a Tank with HMG as a Commander, assign any AI-Team member as gunner in same tank, set an enemy Vehicle in Sight as Target via "T" or "R" switch Gunners Weapons. Yell at the Gunner to do his fucking job, then switch to the Gunners seat yourself, blow up the Target, then either tell your former Gunner to stay behind the HMG where he cant become confused by a vast selection of weaponry or kick him outta the Tank and find another use for him,( scout or "Mine-Detector")optionally you could tell him to walk back to Base and take some time thinking about his Career whilst complaining yourself in a rather long monologue bout how hard it is to find good personnell nowadays and that if you want something to be done, you have to do it yourself...

guess i was bored ;)