

This volume has been produced primarily as a result of painstaking efforts by David Sissons, who served in the Section for a brief period in 1945.

However, towards the end of the war it also worked on some Soviet messages, evidently contributing to the effort to track down intelligence leakages from Australia to the Soviet Union. It concentrated on lower-grade Japanese diplomatic codes and cyphers, such as J-19 (FUJI), LA and GEAM. It was a small but very select organisation, whose ‘technical’ members came from the worlds of Classics and Mathematics. This book recounts the history of the Special Section and describes its code-breaking activities. The Section has remained officially secret as successive Australian Governments have consistently refused to admit that Australia ever intercepted diplomatic communications, even in war-time. During the Second World War, Australia maintained a super-secret organisation, the Diplomatic (or ‘D’) Special Section, dedicated to breaking Japanese diplomatic codes.
