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U.S. Marine Corps 1st Lt. Jonathan Berklich, a ground intelligence officer with Weapons Company, 2nd Battalion, 1st Marine Regiment, Marine Rotational Force – Darwin 25.3, conducts planning with members of the Japan Ground Self-Defense Force during Exercise Southern Jackaroo at Townsville Field Training Area, Queensland, Australia, June 1, 2025. - U.S. Marine Corps 1st Lt. Jonathan Berklich, a ground intelligence officer with Weapons Company, 2nd Battalion, 1st Marine Regiment, Marine Rotational Force – Darwin 25.3, conducts planning with members of the Japan Ground Self-Defense Force during Exercise Southern Jackaroo at Townsville Field Training Area, Queensland, Australia, June 1, 2025. (U.S. Marine Corps photo by Cpl. Angelina Sara)

U.S. Marines with Company C, 1st Battalion, 4th Marine Regiment, Marine Rotational Force – Darwin, participate in a conditioning hike during Exercise Southern Jackaroo 2015 June 14 at Townsville Field Training Area, Queensland, Australia. SJ15 was a combined training opportunity for the Marines with their Australian allies that helped to improve interoperability between the two forces. The U.S. Marine Corps and the Australian Defence Forces are committed to continuing their tradition of more than 100 years of global partnership and security cooperation between Australia and the United States of America. - U.S. Marines with Company C, 1st Battalion, 4th Marine Regiment, Marine Rotational Force – Darwin, participate in a conditioning hike during Exercise Southern Jackaroo 2015 June 14 at Townsville Field Training Area, Queensland, Australia. SJ15 was a combined training opportunity for the Marines with their Australian allies that helped to improve interoperability between the two forces. The U.S. Marine Corps and the Australian Defence Forces are committed to continuing their tradition of more than 100 years of global partnership and security cooperation between Australia and the United States of America.

Marines with Company C, 1st Battalion, 4th Marine Regiment, Marine Rotational Force – Darwin, commence Exercise Southern Jackaroo with soldiers with Company A, 3rd Battalion, The Royal Australian Regiment, Australian Army, Australian Defence Force, May 3 at Townsville Field Training Area, Queensland, Australia. SJ15 is a bilateral training exercise between soldiers from Company A, 3RAR, and the Marines with MRF-D. The rotational deployment of U.S. Marines in Australia affords an unprecedented combined training opportunity with their Australian allies and improves interoperability between the two forces. - Marines with Company C, 1st Battalion, 4th Marine Regiment, Marine Rotational Force – Darwin, commence Exercise Southern Jackaroo with soldiers with Company A, 3rd Battalion, The Royal Australian Regiment, Australian Army, Australian Defence Force, May 3 at Townsville Field Training Area, Queensland, Australia. SJ15 is a bilateral training exercise between soldiers from Company A, 3RAR, and the Marines with MRF-D. The rotational deployment of U.S. Marines in Australia affords an unprecedented combined training opportunity with their Australian allies and improves interoperability between the two forces.