This collection of essays discusses various aspects of the First World War and aims to summarize the latest literature on Britain's participation in that war and also to open up new lines of investigation. These include the role of intelligence in land and air battles; Anglo-American financial relations; Anglo-Russian and Anglo-Irish relations; the British Labour movement in the war; and the final campaigns of 1918, which led to the Allied victory. These essays are written not only for the specialist but also to be accessible to students and to the general reader.