John Rabe in Nanking, 1937. By using his Nazi Party credentials, Rabe's actions helped save the lives of between 200,000 to 250,000 Chinese civilians from the Japanese.
Soviets and Red Cross reported like thousands in the camps but they reported a lot more in Pattons camps, this is also corroborated by pre war population documentation.
People will say "well you can't know the exact population of a country!" But even in the 30s Poland was able to keep a census because the former German and Russian empires were quite capable of determining population, especially with the first World War.
