Final answer:
The forced repatriation of Soviet citizens during World War II was known as Operation Keelhaul, which often led to severe consequences for those returned to the Soviet Union.
Step-by-step explanation:
The forced repatriation of Soviet citizens liberated from German captivity by Allied forces during World War II was called Operation Keelhaul. This operation involved the controversial return of individuals who had cooperated with the Germans against the Soviets, including Cossacks, Ukrainians, and Russians, to the Soviet Union. Often, these repatriations resulted in harsh and possibly fatal consequences for those returned. In the context of the broader repatriation effort after the war, millions were moved back to their 'home' nations, while at the same time, Jewish Holocaust survivors faced significant challenges in finding countries that would accept them, with many eventually settling in the United States and the British Mandate of Palestine.