The first report to Parliament, published in early 1917, of the commission set up to review the Dardanelles campaign in which the British and their allies invaded the Gallipoli Peninsula during World War I (1914-18). The report was critical of the Cabinets conduct of the war and the urgent aim of the Commission was to prevent the war being lost. The second report is published in this series as, Defeat at Gallipoli: the Dardanelles Commission Part II, 1915-16.