In September 2004, whilst still Lead Commando unit, the Group deployed to the United States on Exercise BLACKHORSE. This was split into two phases, the first of which took place with the United States Marines Corps Ground-Air Combat Centre at 29 Palms, California. This 900 square miles of desert, allowed realistic live firing, involving artillery and air strikes. The second phase took place at the Marine Corps Mountain Warfare Training Centre, high in the Sierra Nevada Mountains. An early snowfall meant the Commando was able to carry out cold weather warfare training, operating between 7000 and . 2006 saw the Unit deploy to Norway for further Arctic training which culminated with a NATO led exercise.