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.