This was published under the 2010 to 2015 Conservative and Liberal Democrat coalition government
The Prince will take up the position of SO3 (Defence Engagement) and his responsibilities will include helping to co-ordinate significant projects and commemorative events involving the Army in London.
He will retain the rank of captain and be based at Horse Guards in central London.
He also undertook an operational tour of Afghanistan as an Apache pilot between September 2012 and January 2013, where he worked as part of the Joint Aviation Group which provides helicopter support to the International Security Assistance Force and Afghan security forces.
Lieutenant Colonel Tom de la Rue, who commanded Prince Harry in the Army Air Corps, said:
Captain Wales has reached the pinnacle of flying excellence as an Apache pilot, particularly in Afghanistan, and, in the process, has proved to be a real inspiration to the many Army Air Corps officers and soldiers who have come to know him so well over the last 2 years.