Admiralty: Naval Intelligence Division and Operational Intelligence Centre: Intelligence...

This series contains Admiralty Intelligence papers, German naval communications, Operational Intelligence Centre special intelligence summaries, special intelligence reports from Japanese and Mediterranean waters, ULTRA decrypts, essays on World War 2 by German naval staff officers, statements by German prisoners of war and intercepted enemy signals between Berlin and Tokyo. They relate to such matters as U-boat warfare, attacks on convoys, minesweeping and enemy shipping movements, together with reports by the naval intelligence division and correspondence concerning the British Naval Mission to Moscow (1941-1946). The series includes photocopies of documents cited in the official history of the intelligence services as well as a small series of message logs from the First World War.