http://home.st.net.au/~dunn/sigint/aswg.htm The function of the ASWG was to:- - Intercept enemy wireless transmission - Monitor Allied wireless transmissions A small group of signalmen were gathered together to establish No. 1 Special Wireless Section at Seymour in Victoria under the command of Captain Jack Ryan on 19 June 1940. They subsequently changed their name to No 4 Australian Special Wireless Section was formed at Seymour . After some initial training they left Sydney in late December 1940. They served in Egypt and after some more training moved to Greece where they monitored German and Italian messages. Despite many successful intercepts, the Germans started to take more ground and eventually No. 4 Special Wireless Section was ordered to withdraw from Sphakia. After a 65kms rugged trek they boarded a commando assault ship, the "Glengyle". The section went on to take part in the Syrian campaign monitoring Vichy French messages. When Australia had declared war on Japan after the attack on Pearl Harbor on 7 December 1941, the section started to learn the Japanese Kana Code. Staff from the British Sigint base at Sarafand assisted with training in Japanese intercept procedures. The section boarded the British transport ship "Mendoza" and on arrival in Colombo they transferred to the "Orcades" which returned them to Australia. Brigadier Simpson, the Chief Signals Officer was also on board the "Orcades". During the voyage he developed the model for the Australian Army's Sigint organisation.