Changing the AO unit.

[Imp]

Changing the AO unit to a regular ( full sized ) infantry squad, has no drawbacks and several advantages in the Long Campaign

Think what you want him to do a standard HQ is size 0 so hard to spot, perhaps a good use is to stick him on a flank at start as a pair of eyes with a covering platoon. He can act as FOO & help rally the probably out of contact platoon if need be. Size 0 also alows him to be a good trailing scout once enemy morale is broken making assisting nearby units more effective & letting him help keep them running if its safe to do so. Remember keeping him unsuppressed is important shadowing a company leader perhaps to maintain contact & size 0 helps him avoid trouble.