The battalion contributed a mechanised platoon to two rotations of the ANZAC Battle Group deployment to Timor in 2007 and 2008 as part of Operation Astute. In 2008–09, elements of the battalion deployed to Afghanistan as part of Operation Slipper, forming the basis for the 1st Mentoring and Reconstruction Task Force (MRTF-1). One member of the battalion was killed in action during an engagement near Kakarak on 16 March 2009.