I believe it could have happened. The Koreans didn’t put up with any crap. They couldn’t afford to and survive. A 1000 fewer communists to kill your children was considered a good thing.
They didn’t have the time or resources to build a Guantanamo Bay or anything else.
A few years back, I recall watching an epic film on the Korean War produced in the South Korea. It centered on two brothers and their extended family and relations, and it made no bones about both sides being guilty of summary executions for just the reasons you mentioned.
I’m with you! Communism is responsible for the deaths of 100 million, give or take a million. The Chinese alone allowed millions to die during The Great Leap Forward in the late Fifties.
Next time we take control of a prison like Abu Ghraib, I’m for turning it over to the South Koreans. Based on history, they generally don’t put up with crap.