It is...
The military flight time conversion gives credit for taxi time. Civilian pilots log chock to chock time (generally), military from takeoff to landing, so the military guys were losing credit for taxi time. Industy common practice is to either factor total flight time by a percentage (120%) or to add 0.2-0.3 hours per sortie. I've seen it in fixed-wing companies, haven't seen it for helicopter companies, but I never applied to a helicopter company either.
If the guy was flying military skid equipped aircraft, he logged from takeoff to hover to landing from hover so that time should not be factored, though most fixed-wing companies that give credit for helicopter time (damn few) wouldn't know to check for that.