Collection of 79 History documentaries, free to watch, including Cold War, by CNN Perspectives (1999), The World at War (1973), The Unknown Soldiers (2006), Mahatma Gandhi Footage Collection (1920), and 100 Greatest Discoveries (2004). Channel 4 Topic: World War II ( ) Oct 10, 2015 12, 078 views Stauffenberg: Operation Valkyrie