Aerial photo of the extermination camp Auschwitz-Birkenau, taken by American planes on August 25, 1944. The English text was added by American intelligence. Identified are a transport train standing on the tracks, groups of prisoners, the gas chambers and crematoria. The existence and purpose of the death camps were known to the British and American governments since 1943. Request by Jewish organizations to bomb the extermination facilities were repeatedly refused.