A file of signals intelligence reports, messages, and correspondence issued by the Government Code and Cypher School and sent by the head ('C') of the Secret Intelligence Service (MI6) to the Prime Minister, Winston Churchill. This file includes the following reports: a note on the coversheet, that SHARK was legible on March 29; on North Africa: that the 21st Panzer Division has 13 serviceable tanks and 45 under repair, as of March 30; and from the Japanese ambassador in Ankara, giving German views on possible Allied landings, on March 26.