Australia also formed small-scale raiding and reconnaissance forces, most of which were grouped together as the Allied Intelligence Bureau. Z Special Unit conducted raids far behind the front line, including a successful raid on Singapore in September 1943. M Special Unit, coastwatchers and smaller AIB units also operated behind Japanese lines to collect intelligence. AIB parties were often used to support Australian Army units and were assigned to inappropriate tasks such as tactical reconnaissance and liaison. AIB missions in Timor and Dutch New Guinea were also hampered by being placed under the command of unpopular Dutch colonial administrators. The RAAF formed a specially equipped unit (No. 200 Flight) in 1945 to support these operations by transporting and supplying AIB parties in areas held by the Japanese.