Jeri and others would know a lot more, but I can give you some anecdotal things from the period that happened to 3 friends of mine.

Bill Isenhart is a music educator and we've been friends since our mid 20's. Bill was a graduate of Capital University, an outstanding music school, and was drafted in 1970. He had been the top clarinetist at Cap and was taken into the Navy School of Music (known as the "Pool of Mucus"). He spent his service time there and in a military band in DC, stoned most of the time back then!   He also appeared in a recruiting ad quite by accident. They asked for someone to bring their instrument and a dress uniform and report somewhere......and you got a 7day pass or something. Bill did it and his face and clarinet appeared with a bunch of other service jobs on a recruiting ad in Reader's Digest.

My high school friend Phil had just received his license in 1969 as a commercial jet mechanic as well as one of his airframe certificates. The Army made him a great offer, but he figured the Air Force had the most planes so he went with the Air Force.............and wound up loading bombs in Thailand. Never worked on any other part of the aircraft!!!

The oddest one was Alan. He was an only child, divorced Mom, and they both lived with his grandmother. He came out pretty cool and we became very close friends after we met in our 30's. His Mom was a pro secretary and head of the State Secretarial Association in Tennessee for many years and from an early age, Alan could type quite well. By the time he was in college, very few real secretaries typed as fast as he did. He got drafted and figured he was definitely heading for VietNam when his typing skill was noticed by accident....One thing led to another and he never went.....Spent his service time as an office clerk!

Spaw