Cecil Beaton photograph of a British soldier drinking tea next to a Red Cross mobile tea wagon at Calcutta airport in 1944.
Carrying wounded across the battlefield under shell fire, Battle of Ginchy, Somme, 1916.
Captured German U-boats outside their pen at Trondheim in Norway, 19 May 1945.
Captain H Hickling, commanding naval forces at Arromanches, shows a plan of the Mulberry artificial harbour to Winston Churchill, July 1944.
Canadian Prime Minister Mackenzie King, with President Franklin D Roosevelt, and Winston Churchill during the Quebec Conference, 18 August 1943.
Camp Bastion, Afghanistan, 2014.
Buildings burning in Manchester after a German air raid on the night of 3 December 1940.
British troops unloading flour from ships and loading into railway trucks. Calais, March 1917.
British troops unloading flour from a ship on to steam wagons. Calais, March 1917.
British soldiers smile at a 'Viva Il Duce' slogan on a wall in Reggio, Italy, September 1943.
British infantrymen give a helping hand to wounded German prisoners near La Boisselle during the Battle of the Somme, 3 July 1916.
British infantry retiring from Verneuil driving a flock of sheep before them, 29 May 1918.
British horse lines at Suvla Bay during the Gallipoli Campaign in 1915.
Boulton Paul Defiant Mk I night-fighter of No. 264 Squadron RAF, silhouetted against the clouds during a low-level pass over its base at Biggin Hill, Kent, April 1941.
Blackburn NA-39 during landing trials on HMS VICTORIOUS, June 1959.
Beaufort Mark I, L9878 'MW-R', of No.217 Squadron RAF.
BE2c, two-seat reconnaissance aircraft, used by the Royal Flying Corps (RFC) during the First World War.
Battle traffic at Grevillers 25 August 1918. Mark V Tanks and infantry going forward following the Capture of Grevillers by the New Zealand Division.
Battle of the Somme. A support company of an assault battalion, of the Tyneside Irish Brigade, going forward shortly after zero hour on 1 July 1916 during the attack on La Boisselle.
Battle of the Lys: Nurse caring for British gas-poisoned wounded on a hospital train near Bethune, 1918
Battle of Flers-Courcelette. "C" Company Mark I tank, in the Chimpanzee Valley on 15 September 1916, the day tanks first went into action.
Battle of Bazentin Ridge. An intelligence officer questioning a wounded German prisoner on a stretcher near Contalmaison, Somme, July 1916.
Battle of Bazentin Ridge, 14-17 July 1916. Soldiers digging a communication trench through Delville Wood.
Avro Lancaster Mk I of No.44 (Rhodesia) Squadron, 14 April 1942, while practising for the daylight, low-level attack on the M.A.N. diesel engineering works at Augsburg which took place three days later on 17 April.