His first two sons did not serve in VN, they refused. The oldest as a religious CO turned 18 in 1967 and was drafted and did not go.
My second oldest brother refused to serve, period. When he was drafted, he first got the 4 year deferment from going to college, then he just refused to join in around 1970.
When they finally caught up to him, the war was essentially over and he was ordered to serve 300 or so hours of community service for punishment.
Needless to say my Dad was devastated by their actions, never really talked about it, but was so confused by the unamerican actions and they were from his own blood, it must have been so hard for him.
That’s a sad story - your Dad deserved better than that. Both of my Grandfathers served in WWI, my Dad and my Uncles served in WWII and when our time came, my Brother and I served in Vietnam.
The enemy made it easy to overcome any qualms about killing them.