The Prince Frederick, Duke of York and Albany was a member of the Hanoverian and British Royal Family, the second eldest child, and second son, of King George III. From the death of his father in 1820 until his own death in 1827, he was the heir presumptive to his elder brother, King George IV, both to the United Kingdom and the Kingdom of Hanover. As an inexperienced young military officer, he presided over the unsuccessful campaign against the forces of France in the Low Countries, during the war which followed the French Revolution. Later, as commander-in-chief of the British army, he reorganised the army's forces, putting in place administrative reforms. He also founded the United Kingdom's renowned military college, Sandhurst, which promoted the professional, merit-based training of future commissioned officers. In the opinion of Sir John Fortescue, York did "more for the army than any one man has done for it in the whole of its history.