In 2010 Peter assumed the position of Honorary Colonel to 203 (Welsh) Field Hospital in Cardiff. The Hospital has deployed on Operations as a formed unit in 2008 to Afghanistan, additionally many of its personnel have seen active service on Operations in the Balkans and Iraq. Dr Carter is a keen supporter of Military Nursing and has hosted Tri-service events at Cavendish Square. In conjunction with his support of Military Nursing Peter visited Basra, Iraq in 2007 at the height of the conflict and in 2011 spent a week in Afghanistan where he visited troops, nurses and medical personnel in a number of locations.