The Commander-in-Chief of the Forces, later Commander-in-Chief, British Army, or just the Commander-in-Chief (C-in-C), was (intermittently) the professional head of the English Army from 1660 to 1707 and of the British Army from 1707 until 1904. In 1904 the office was replaced with the creation of the Army Council and the appointment of Chief of the General Staff.
Image: General Thomas Fairfax (1612 1671) by Robert Walker and studio
Image: Oliver Cromwell by Samuel Cooper
Image: Peter Lely (1618 1680) General George Monck (1608–1670), 1st Duke of Albemarle, Soldier and Statesman PG 900 National Galleries of Scotland
Prince Frederick, Duke of York and Albany was the second son of George III, King of the United Kingdom and Hanover, and his consort Charlotte of Mecklenburg-Strelitz. A soldier by profession, from 1764 to 1803 he was Prince-Bishop of Osnabrück in the Holy Roman Empire. From the death of his father in 1820 until his own death in 1827, he was the heir presumptive to his elder brother, George IV, in both the United Kingdom of Great Britain and Ireland and the Kingdom of Hanover.
The Duke of York
"The modern Circe or a sequel to the petticoat", caricature of Frederick's lover, Mary Anne Clarke by Isaac Cruikshank, 15 March 1809. The prince resigned as head of the British army ten days after the caricature's publication.
The Marriage of the Duke of York