Legend has it that the Hells Angels, in a nationalistic fervor, tried to enlist en masse during Vietnam. IMHO the government missed a huge opportunity by not taking them up on the offer.
Of course, that wouldn't have fit in with the war plans, as the Hells Angels would have ignored orders not to kill people or break things. A buddy of mine who was a Combat Engineer did time in the brig for firing his .45 Colt (he was driving a dozer at the time) at anything creeping aroud wearing black pajamas, without waiting to be fired on.
Legend has it that the Hells Angels, in a nationalistic fervor, tried to enlist en masse during Vietnam.