Imperial War Museum
Its collections contain a vast repository of material on all aspects of the two world wars and beyond - invaluable.
National Army Museum
British Army Museum containing material on Britain's wars up to 1914.
National Archive
Contains official documents on British military operations.
Second World War Experience Centre
Expanding collection (based in Leeds) of memoirs, diaries etc primarily on British involvement in the Second World War.
US Army Military History Institute
Official collection of material on US Army in Carlisle, Pennsylvania.
National Ex-Prisoner of War Association
Association of former British POWs.