Why We Fight (1942) Documentary – The Battle of Britain January 27, 2021 Nicola United Kingdom History, Why We Fight - Documentary Series (1942) The Battle of BritainDepicts Britain’s victory against the Luftwaffe. Capra’s synopsis: “Showing the gallant and victorious defense of Britain by Royal Air Force, at a time when shattered, but unbeaten, British were the only people fighting Nazis.”