This photo, from the Ulster Museum, shows soldiers from Northern Ireland at the front in France, 1915. (Photograph Reproduced with the Kind Permission of the of the Trustees of the National Museums & Galleries of Northern Ireland and the Ulster Museum, Belfast)

• First World War - British Pathe
• First World War - Imperial War Museum
• First World War - National Archives
• First World War - PRONI Blog
• National Museums Northern Ireland