Marines with Company G., Battalion Landing Team 2nd Battalion, 1st Marines, 31st Marine Expeditionary Unit, pass belts of linked machine gun ammunition during the siege of Raspberry Creek here, July 5. The major engagement of the multi-week war during Exercise Hamel 2012. 50 Marines fend off the advancing Australian Army 1st Brigade before eventually being overrun. Exercise Hamel 2012 is a multi-national training evolution between the U.S. Marine Corps, Australian Army and New Zealand Army, aimed at certifying the Australian 1st Brigade for operational deployment. The 31st MEU is the only continuously forward-deployed MEU and is the nationâ€™s force in readiness in the Asia-Pacific region.