1st Combat Engineer Regiment is based in Darwin, Northern Territory and is attached to the 1st Brigade.
The current structure of 1st Combat Engineer Regiment is:
• 1st Field Squadron
• 9th Field Squadron
• 23rd Support Squadron
• Operational Support Squadron
From late 2006 to mid-2007, a third of 1 CER was deployed to Tarin Kowt, Afghanistan, as the 1st Reconstruction Task Force, the Australian contribution to a Dutch-led Provincial Reconstruction Team. During this deployment, the remainder of 1 CER carried out a heavy training schedule.
In late 2008, personnel from 1st Field Squadron and 23rd Support Squadron were sent to Afghanistan on an eight-month deployment as part of the 1st Mentoring and Reconstruction Task Force, during which Corporal Michael Anthony Cole was awarded the Order of Australia Medal. The rest of the regiment was involved in training and trials of the PackBot military robot (the Scout and Explorer variants) for Australian use.
In July 2009, 1 CER and 5th Battalion, Royal Australian Regiment served as the opposing force during Exercise Talisman Sabre 2009.
In October 2009, the 1st Field Squadron Group provided Disaster Relief and Humanitarian Support in response to the magnitude 7.6 earthquake that struck off Western Sumatra on 30 September 2009.