My family lived in Laos from 1963 - 1972. My father was sent there to help get supplies (weapons and other aid) to the Laotion Military.
The Royal Lao Military, correct? Laos fell to the communists shortly after the fall of Saigon in 1975.
I once entertained a visiting former Royal Lao Army general who was in charge of Southern Laos when it fell to the communists in 1969. He stated over and over that in all the battles that he fought he never counted one Pathet Lao dead or wounded. He was fighting North Vietnamese regular troops. He never saw, met or talked with anyone who could be called a member of the Pathet Lao. This is why I made the statement and it pretty much goes along with what I found out for myself inside Laos.
Do you remember any of the officers your family interacted with? Where was your family stationed?