Sixty years ago, in the spring of 1945, Allied forces liberating Europe found evidence of atrocities which have tortured the world's conscience ever since. As the troops entered the German concentration camps, they made a systematic film record of what they saw. Work began in the summer of 1945 on the documentary, but the film was left unfinished.
FRONTLINE found it stored in a vault of London's Imperial War Museum and, in 1985, broadcast it for the first time using the title the Imperial War Museum gave it, 'Memory of the Camps.
Watch the full documentary now