Soldiers onboard a leave train heading out from Victoria Station, London during the First World War.
A 60-pounder artillery battery in action at Gallipoli, 1915.
An Airco DH2 taking off from Vert Galand airfield in ealy 1916.
Trench cookers of the 191st Siege Battery, Royal Garrison Artillery, in a position near the village of Wancourt, 29 April 1917.
HM King George V, on Wytschaete Ridge in Belgium on 4 July 1917 during a tour of the Western Front.
Members of the Women's Royal Air Force (WRAF) on parade in 1918.
Nancy, springbok mascot of the 4th South African Regiment, in Delville Wood, 17 February 1918.
Forward scouts of the 9th Hodson's Horse, an Indian cavalry regiment, pause to consult a map, near Vraignes, April 1917.
Experimental camouflage on the fuselage of a Sopwith camel, developed during the First World War to disguise the aircraft's direction of flight.
Gladys Wilburn, a motor boat driver with the Women's Royal Naval Service, in her boat, the 'BALMACAAN', with her spaniel dog, Southwick, Sussex, 1918.
Remains of a Mk I 'Male' Tank of 'D' Company on the old Somme battlefield, September 1917.
A 6-inch howitzer being manhauled through the mud near Pozieres during the Battle of the Somme in September 1916.
Two women munitions workers with a truck load of shell cases in the New Case Shop at the Royal Arsenal, Woolwich during the First World War.
Members of the Women's Land Army climbing over a gate on a British farm during the First World War.
Still from the British film "The Battle of the Somme". The image is part of a sequence introduced by a caption reading "British Tommies rescuing a comrade under shell fire".
Munition workers painting shells at the National Shell Filling Factory No.6, Chilwell, Nottinghamshire in 1917.
A busy howitzer shop at Coventry Ordnance Works. Men and women work together as several gun barrels are transported overhead by pulleys.
Officers verses other ranks football match played by members of the 26th Divisional Ammunition Train near the city of Salonika, Christmas Day 1915.
A group of dog handlers stand with their dogs at the British Army kennels near Etaples, 20 April 1918.
A sister and a matron from Queen Alexandra's Imperial Military Nursing Service during the First World War.
A female munitions worker is lifted into the barrel of a 15-inch naval gun manufactured at the Ordnance Works, Coventry, during the First World War, in order to clean the rifling.
Sopwith F1 Camel, single-seat scout.
BE2c, two-seat reconnaissance aircraft, used by the Royal Flying Corps (RFC) during the First World War.
Still from the British documentary film 'The Battle of the Somme'. The image is part of a sequence purportedly showing British soldiers moving forward through wire at the start of the Battle of the Somme, 1 July 1916.