The British Naval Attaché at the Oslo Legation, Rear-Admiral H Boyes, received an anonymous package at the beginning of November 1939 detailing German secret weapons development. The document contained information on such things as radar development, remote controlled gliders, acoustically and magnetically detonated torpedoes, and long-distance air navigation techniques with suggested countermeasures. The report also revealed Peenemünde and Rechlin as Wehrmacht experimental weapons test sites.
Three copies of the Oslo report with drawings and English translation were forwarded to the Director of Naval Intelligence on 6 November 1939.
After the war it was established that the report had been supplied by German mathematician and physicist Hans Mayer.
The first part of the report is reproduced below and includes copies of the drawings.
Intelligence School 9 was established in January 1942 as the executive branch of MI9. It's job was to assist British and Commonwealth service personnel to evade capture when behind enemy lines and to assist Prisoners of War to escape. Arguably IS9's most important work was to gather intelligence from and boast the morale of Allied POWs. The Historical Report of IS9, compiled by the section at the end of World War II, is reproduced below.