Swedish Signal Intelligence 1900-1945

A history of Swedish interception of radio and telegraph messages during World Wars I and II providing a valuable background to Swedish military operations at this time.

Bengt Beckman, C.G. McKay

a definitive account of the evolution of Swedish signal intelligence between 1900 and 1945...an interesting and surprisingly revealing source of European cryptology in the first half of the twentieth century, with many examples of how ciphers were solved. There are fascinating glimpses into the development of Swedish intelligence contacts, with accounts of Swedish-German cryptanalytical cooperation during World War I in intercepting and solving Russian diplomatic telegraph traffic. There is also an authoritative account of Swedish success against German and Soviet traffic during World War II.
- Cryptologia