|Part of the Japanese occupation of British Borneo during World War II|
|Empire of Japan||Australia|
|Commanders and leaders|
|Z Special Unit|
|Casualties and losses|
The island of Ternate had been occupied by Japan since 1942. The Sultan sent several islanders to Australian Army headquarters on Morotai Island asking to be rescued. The Dutch were enthusiastic about the mission.
The mission was authorised by General Douglas MacArthur who was worried about the Sultan's life and his wives. The Sultan had been sympathetic to the Allied cause.
The mission left Morotai on 8 April 1945 and landed on Hiri Island, two kilometres north of Ternate.They went to the coastal village of Kulaba after a six-hour trek. Members of the unit rescued the Sultan along with his two wives, eight children and retinue of courtiers and relatives.
Several boatloads of Japanese soldiers arrived the next day resulting in a shooting fight which resulted in the death of three Japanese and Australian officer Lieutenant George Bosworth. Warrant Officer Dick Perry assumed command and attacked the remaining Japanese who were all killed.
- Smith, Kevin (2012). "Operation Opossum: The Raiding Party to Rescue the Sultan of Ternate, 1945". Sabretache. 53 (4, Dec): 48–54. ISSN 0048-8933.
- George Bosworth's service record accessed 15 September 2013
- Allard, Tom & Lindsay Murdoch (24 April 2010). "The Untold Story: How Z Force Saved the Sultan". Sydney Morning Herald. Retrieved 14 September 2013.
- Johnson, Sue (27 March 1982). "After 37 years and 10 beheadings, Operation Rimau Explodes Again". Sydney Morning Herald. p. 41.
- Operation Opossum at Z Special Unit