Marines with 1st Battalion, 5th Marine Regiment, Marine Rotational Force – Darwin, and Australian Soldiers with the 5th Battalion, Royal Australian Regiment, assault an enemy position during Exercise Koolendong at Bradshaw Training Area, Aug 21, 2014. Four Marines with 1st Bn., 5th Marines, were given an opportunity to support elements of the 5th Battalion, Royal Australian Regiment and 1st Armored Brigade. During Exercise Koolendong 2014, approximately 1500 Marines and Australian Defence Force soldiers will undertake a wide spectrum of infantry training activities to include establishing an expeditionary operating base in austere conditions, company-sized helicopter and ground live-fire ranges.