In one of the most shameful and poorly known episodes of our history, the US and the UK transported Russians gathered up in Europe after WWII back to Russia. The deal was made with Stalin to bring them back. Many of these same people were shot within hearing distance of the US and British ships that had transported them. It’s name was appropriate - Operation Keelhaul.
Knowing how the Soviets would treat them, many U.S. commanders refused to give up their Soviet POWs. Patton, I believe, was one such commander.
I knew a Red Army veteran who was captured on the Eastern Front early in the war and spent most of WW II in a POW camp in Austria -- where he was treated very well. As the end of the war approached, he walked away from the camp and went west as fast as he could; he knew what would happen to him if he fell back into Soviet hands.
He surrendered to a unit in Patton's command, where he was kept from the Soviets in the immediate post-war. Eventually, he gained refugee status and was allowed into the US.
He loved the US with a greater passion than anybody I've ever known.