The Duke of York is a Vice Admiral in the Royal Navy and holds two naval service appointments:
His Royal Highness also holds appointments in the British Army:
- Colonel in Chief, The Yorkshire Regiment (14th/15th, 19th and 33rd/76th Foot) since 2006
- Colonel in Chief, The Royal Irish Regiment (27th (Inniskilling), 83rd, 87th and The Ulster Defence Regiment) since 1992
- Colonel in Chief, Small Arms School Corps since 2003
- Colonel in Chief, The Royal Highland Fusiliers since 2003 and since 2006, Royal Colonel, The Royal Highland Fusiliers, 2nd Battalion The Royal Regiment of Scotland.
- Deputy Colonel-in-Chief of The Royal Lancers since 2015
And in the Royal Air Force:
His Royal Highness also holds appointments in the Commonwealth:
Canada:
New Zealand: