I doubt many 1%ers are veterans, it's just not what they would do. Different gangs have different rituals to earn that patch. Most of them are big into selling drugs, I grew up with a few Bandidos back in the 70's. they were pretty big here then. don't see many here now. most of the older ones are dead or in prison.
They have changed a bit since then too, used to be everything you owned belong to the bandidos, you owned nothing. if they needed your place to hang out then you gave it to them. also if some dipshit decided to rob a 7-11 store or jump on some other bikers, you had better be there to help. It was brotherhood.
But with the loss of testosterone in males now, their rules have laxed some. Used to blacks were not invited to be in the gang. they were not liked, now there are black bandidos. That 1% patch had to be earned, as with the other rocker panels. but the 1% patch meant you did what only 1% of the population would do. it wasn't necessarily murder, but it wasn't going to church on sunday either.