Check out Operation Keelhaul on the web. The story is out there. It’s a sad chapter in our history.
I'm familiar with it.
Another facet of these events was the refusal of the United States to forcibly repatriate the Ukrainian Soviet prisoners of war and the Ukrainian Axis prisoners of war who the Soviets were murdering on the docks as they disembarked from the British and American transport ships. Although the American and British governmental authorities continue to deny to the present day the reports and allegations, Stalin supposedly retaliated against the Western Allies by refusing to repatriate some 30,000 plus more of the British Commonwealth and about some 26,000 IIRC American prisoners of war who fell into the hands of the Soviets in Eastern Europe in the Second World War. The mines of Donetsk and the Donbas are among the numerous locations in the Soviet Gulag where thousands of these British and American prisoners of war allegedly perished as slave laborers in the Soviet Union. More British and American military and civilian personnel were kidnapped in the West and transported into the Soviet Union by Soviet and other Communist intelligence services during the Cold War, where they too were executed or in some cases also perished as slave laborers in the Soviet Gulag such as the mines around Donetsk.