Similar to
@walra107 , I read "everything" I could get my hands on at that age.
@JB152 , read some of the classic Vietnam era books - There are a few that stand out to me to this day:
- Chickenhawk
- The Five Fingers
- Field's of Fire
- Recondo-LRRPs in the 101st Airborne
- Marine Sniper, 93 confirmed kills
These may not be specifically what you are seeking, but they will give you a view of the services from a different perspective - Today it is pretty much accepted to write an "I was there" book, not so much for the Nam vets. If you had to pick just two, go with Chickenhawk and Field's of Fire.