Not sure about other branches, but I know the Puddle Pirates (Coast Guard) in the mid-Nineties had more then enough recruits, and also had a problem with people staying in too long, and having to force them to retire when they got too old. Enlistment and retention were very high compared to other branches of the military, with a lot of people from other branches joining the CG after doing their time in the Army, Air Force, et cetera. Now it seems they are having trouble meeting their quotas.