The Battle of the Atlantic and Signals Intelligence: U-boat Tracking Papers, 1941-1947

Explore communications intelligence, including the decryption of enemy radio messages and the location of German U-boats by means of radio. Communications intelligence was pivotal to the Allied conduct of naval operations during the Second World War. The papers from the Public Record Office and the National Archives in this collection were written between 1941 and 1947 for the most part by a small group of American and British naval intelligence officers, stationed at Bletchley Park, near London