Not quite sure if this is a problem
 

I don't believe I've ever tried to fire a single weapon at a target in the same hex before, so this may not be a problem.

Go to Unit V1 (M1A1HC TUSK FEP) and attempt to fire weapon #3 (using the "W" hotkey) at the targeted Chinese VN3 in the hex. If weapon#1 (which shouldn't fire) doesn't kill it the unit the M1A1 will also fire weapons#2 and #3.

Included are a copy of a saved game (#6) and my custom OOB (#13) which is needed as unit V1 does not exist in the standard OOB.

Re: Not quite sure if this is a problem
 

Never tried it myself but can understand the unit throwing everything its got at it if its in the same hex so not really in need of a fix.

Re: Not quite sure if this is a problem
 

When enemy units are in the same hex a mêlée situation can be initiated which basically generates a firefight so you may have only wanted one weapon to fire but things " got out of hand"

....and YES, the M1A1HC TUSK FEP *IS* in the stock OOB

Re: Not quite sure if this is a problem
 

Thank you, I thought that might be the case, but as I said I don't recall ever having the AI drive a vehicle right into a hex I was occupying before.

Yes it is, but not with the unit# of the one used in the saved game.