Photo Archive
Mesopotamian Expeditionary Force, 1914-1918
Many of these images reprinted below come from the Vintage Photographs page of FirstWorldWar.com, a surprisingly good online history site.
For more World War I images - so you can sift through looking for the rare shots of Iraq - also check out the Wilfred Owen Multimedia Digital Archive, where you can browse manuscripts and letters of the British soldier-poet Wilfred Owen, along a wealth of World War I archived photos, video footage, and interviews, presented with the help of the Imperial War Museum, which has a fine online collection of war photographs and documents.
Indian cavalry advancing near Basra, 1914-1918
British and Indian soldiers entering Baghdad, March 11, 1917.
With Kut recaptured from the Turks on 24 February 1917, British and Indian troops under General Stanley Maude finally seized Baghdad on 11 March 1917. This photograph shows the 1st Division of the 4th Hampshire Regiment entering the city past a large crowd of local onlookers. The division was, in fact, based at a garrison just outside Baghdad and was ordered to march into the city specifically for the purposes of this staged photograph. (From the National Archives)
Map from The Times (London), Monday, May 1, 1916. Times Digital Archive.
From the National Archives: "This photograph shows an emaciated Indian army soldier who survived the siege of Kut (December 1915-April 1916). It was probably taken in July 1916, after he and other British POWs had been released from Turkish captivity in Baghdad during a prisoner exchange. The soldier’s skeletal frame indicates not only the appalling conditions inside Kut during the siege, but also the harsh treatment meted out to ‘other ranks’ while in enemy hands afterwards."
Indian troops laying telephone wires over desert in Mesopotamia.