Even before the end of WWII in Europe, the Supreme Headquarters Allied Expeditionary Force’s Psychological Warfare Division ordered at the behest of Sidney Bernstein the production of a documentary about the concentration camps, to show the German people the atrocities they were responsible for. Material was collected from Soviet, American and British sources, a treatment written (with some advice from Alfred Hitchcock), the editing process started – till September 9th, when the production was stopped after a rough-cut screening.
At that point, two other films using partly the same material had been finished: Nazi Concentration Camps by George Stevens, presented as evidence at the first Nuremberg Trial, and Death Mills by Hanuš Burger (supervisor: Billy Wilder), screened to the German public starting January 1946. With German Concentration Camp Factual Survey, the Imperial War Museum has attempted to create a version of the project that comes as close as possible to its original form and intent.