U.S. Marines with Lima Co., 3rd Battalion, 1st Marine Regiment, Marine Rotational Force – Darwin 23 engage simulated targets during Exercise Southern Jackaroo 23 in Townsville Field Training Area, Queensland, Australia, July 1, 2023. Southern Jackaroo is a trilateral exercise with MRF-D, Japanese Ground Self-Defense Force, and Australian Defence Force, with Republic of Korea observers, working together to achieve fire, maneuver, and communications interoperability objectives. - U.S. Marines with Lima Co., 3rd Battalion, 1st Marine Regiment, Marine Rotational Force – Darwin 23 engage simulated targets during Exercise Southern Jackaroo 23 in Townsville Field Training Area, Queensland, Australia, July 1, 2023. Southern Jackaroo is a trilateral exercise with MRF-D, Japanese Ground Self-Defense Force, and Australian Defence Force, with Republic of Korea observers, working together to achieve fire, maneuver, and communications interoperability objectives.

A U.S. Marine with 3d Platoon, Lima Company, 3d Battalion, 7th Marine Regiment, Ground Combat Element, Marine Rotational Force-Darwin 22, helps a simulated casualty off of the battlefield during a simulated combat defense as part of exercise Southern Jackaroo 22 at Shoalwater Bay Training Area, May 21, 2022. Southern Jackaroo is a multilateral exercise carried out by Marines with MRF-D, the Australian Army and Japan Ground Self-Defense Force soldiers, focusing on live-fire and combined arms training. (U.S. Marine Corps Photo by Cpl. Cedar Barnes) - A U.S. Marine with 3d Platoon, Lima Company, 3d Battalion, 7th Marine Regiment, Ground Combat Element, Marine Rotational Force-Darwin 22, helps a simulated casualty off of the battlefield during a simulated combat defense as part of exercise Southern Jackaroo 22 at Shoalwater Bay Training Area, May 21, 2022. Southern Jackaroo is a multilateral exercise carried out by Marines with MRF-D, the Australian Army and Japan Ground Self-Defense Force soldiers, focusing on live-fire and combined arms training. (U.S. Marine Corps Photo by Cpl. Cedar Barnes)