"M" Special

M Special unit, was part of the Services Reconnaissance Department, a joint Australian, New Zealand and British military intelligence reconnaissance unit, which saw action against the Japanese during World War II. It was formed in 1943, as a successor to the coastwatchers and unlike its counterpart, Z Special Unit (Z Special) which was involved in a number of notable direct-action commando-style raids, M Special Unit's role was more clandestine focusing mainly upon gathering intelligence on Japanese shipping and troop movements by sending small teams behind enemy lines via infiltration by sea, air or land. It operated primarily in New Guinea and the Solomon Islands between 1943–1945 and was disbanded at the end of the war

(from AWM)