The digital collection Prisoners of the First World War has been created by the International Committee of the Red Cross (ICRC). This collection contains digitized archival records about some 10 million prisoners of war during the First World War, mainly in Europe, but also in Russia, the Near East, India and Japan. The belligerent countries sent lists of prisoners to the ICRC. These lists were organized in alphabetical indexes which have been digitized for this project. You can search here individual persons, but also look at information about the internment camps, in particular from official inspection reports, browse postcards of the ICRC concerning the camps, and read letters about prisoners sent to the ICRC. Among the examples of information about prisoners is the archival record for captain Charles de Gaulle. The collection is accessible in English and French.
The digital collection Mesopotamia Photographs has been created by Gerard Bugler. He has digitized some 300 photographs taken in Mesopotamia between 1915 and 1919 by captain Charles Henry Weaver who worked with the Red Cross. The digital collection can be viewed in sets ordered by cities and themes. The site contains additional information about cities, some digitized texts and background information about captain Weaver.
This website and other online materials about Mesopotamia during the First World War are presented in a very useful overview at War Letters 1914-1918.
The website of the Imperial War Museums (IWM) brings you to the five locations and the various collections of one of the world’s largest war museums. Apart from the main museum in London there are branches in London-North, the Churchill War Rooms and the HMS Belfast in London, and a branch in Duxford. The website provides you with detailed information about the collections, research, exhibits, and educational activities. You can search the collections online with a keyword search or for particular objects, ranging from letters, diaries, interviews, images – including stereoscopic photographs in original formats – and books to aircraft, weapons and toys. For some 90,000 items of the total of 800,000 items you will find digitized materials. Some sixty concise illustrated dossiers on subjects related to the First World War help placing objects in their historical context. The IWM portal has a special section on the centenary of the First World War, and the IWM is also the leading institution of the British First World War Centenary portal. In July 2014 the main museum reopens with a new First World War gallery.
The IWM has also created an online database for searching among the 60,000 war memorials in the United Kingdom, Another IWM website concerning the First World War is Operation War Diary, a project dealing with digitized unit diaries in cooperation with the British National Archives at Kew. At Flickr the IWM is present with Faces of the First World War, photographic portraits of soldiers and officers. Lives of the First World War is a project to bring materials together about daily life between 1914 and 1918, with both items from the holdings of archives, libraries and museums, and items presented by the public in a crowdsourcing project.
The section Centenary of the First World War at the Australian War Memorial portal offers a guide and quick access to relevant digital collections concerning Australia and the First World War. Among the digitized records and documents are unit diaries, materials collected by C.W.E. Bean for the official history of Australia and the Great War, itself also available online here – accompanied by the official history of the Australian Army Medical Services – and several biographical databases, with for example the embarkation roll, information about prisoners of war, and Red Cross files. The AWM portal brings new digital galleries concerning the First World War. The section on the First World War bring also news on commemorative events and activities. The links section points to a selected number of war museums and war memorials in Europe.