Comment by Hilift

A lot of things were swept under the rug and twisted following the war.

Disposition of the Vichy was complicated. In the weeks following WW2, there was an épuration (purge) where Charles de Gaulle estimated about 10,000 were killed. Others estimate 30,000.

In January 1944, the daughter of the US Ambassador to Russia Averill Harriman, Kathleen Harriman Mortimer, visited the Katyn Forest in Russia where 22,000 Polish military and police were executed. She was instructed to say that the Germans committed the atrocity. That was official US policy. Following this, Mortimer was said to be the second most popular and known US woman in Russian, exceeded only by Eleanor Roosevelt.

Her Wikipedia page now states:

"Mortimer was called as a witness to try to determine which nation had performed the mass summary execution. Mortimer's conclusion was that the Germans were responsible for the killing, and that the limited evidence that Soviets had been responsible was a German ploy. That was later proven incorrect, and it has been widely established that the crime was carried out by the Soviets."

In February 1946, Russia tried and convicted seven Germans for a massacre committed by Russians, and used the daughter of the US ambassador as a puppet. Russia then presented Ambassador Harriman with a large, hand carved wooden seal of the United States, and Harriman had it hung behind his desk in the embassy. Seven years later, it was discovered to have a concealed microphone and transmitter.

https://en.wikipedia.org/wiki/Katyn_massacre

https://en.wikipedia.org/wiki/Kathleen_Harriman_Mortimer