A heavily-armed jeep patrol from 'L' Detachment SAS in North Africa, 18 January 1943.
A Heinkel He 111 bomber flying over the East End of London at the start of the Luftwaffe's evening raids of 7 September 1940.
Squadron Leader Brian 'Sandy' Lane, CO of No. 19 Squadron (centre) confers with Flight Lieutenant Walter 'Farmer' Lawson and Flight Sergeant George 'Grumpy' Unwin at Fowlmere near Duxford, September 1940.
45 Royal Marine Commando marches towards Port Stanley during the Falklands War, 1982. Marine Peter Robinson carrys the Union Flag on his pack.
Two Battle of Britain fighter pilots, Flight Lieutenant Brian Kingcome (left), commanding officer of No 92 Squadron RAF and his wingman, Flying Officer Geoffrey Wellum, next to a Spitfire at RAF Biggin Hill, Kent, 1941
Winston Churchill with his Chiefs of Staff in the garden of 10 Downing Street, 7 May 1945.
Men of the 8th Battalion, East Yorkshire Regiment going up to the line near Frezenberg during the Third Battle of Ypres, 1917.
A Douglas Dakota of BOAC at Gibraltar, silhouetted by searchlights on the Rock.
A British soldier stands besides the grave of a comrade near Pilckem during the Third Battle of Ypres, 22 August 1917.
Wing Commander J E 'Johnnie' Johnson, commanding No. 144 (Canadian) Wing, on the the wing of his Supermarine Spitfire Mk IX with his Labrador retriever Sally, at Bazenville, Normandy, 31 July 1944.
Unveiling of the permanent Cenotaph at Whitehall, by His Majesty King George V, 11 November 1920.
The Operations Room at RAF Fighter Command's No. 10 Group Headquarters, Rudloe Manor (RAF Box), Wiltshire, showing WAAF plotters and duty officers at work, 1943.
Supermarine Spitfire Mark Is of No. 610 Squadron based at Biggin Hill, flying in 'vic' formation, 24 July 1940.
Film still from the D-Day landings showing commandos aboard a landing craft on their approach to Sword Beach, 6 June 1944.