I was having some beers with a Vietnamese pilot one evening. He was some vague cousin of KC and piloted an AIE Skyraider. He said he was fed up with the Americans. One day he had spotted four of them in a jeep somewhere isolated. He had then strafed the jeep and killed all four. I had no means of verifying this. Later he was shot down. His body was not discovered in the wreck. I believe the usual fate of captured South Vietnamese pilots was to be shot.
Once talking to some US soldiers they had said that when they had first arrived in the country they had been told that the Viet Cong wore black. The first time one of them saw two men in black somewhere out in the country he shot them. Later they discovered it was also the colour of the South Vietnamese peasantry.
One of my students was called Lan. A very lovely girl, both in looks and character. I became fond of her in a friendly way. She was always so sad. Her beloved brother had been killed whilst serving as an officer in the South Vietnamese army. She seemed to miss him a lot. Later she told me she was getting married. I hope it worked out for her.