Records of Prime Ministers of the United Kingdom transitions between reigns, eight Prime Ministers each served under two sovereigns: George III had 14 Prime Ministers serving during his 59-year reign (reigned 1760–1820), beginning with the Duke of Newcastle. The last incumbent, Lord Liverpool, was the only one appointed by his son (the Prince Regent) during the father's final incapacity to rule. In downward numerical order, numbers of Prime Ministers in office during other reigns are: Only six Prime Ministers came to serve office under sovereigns in whose own reigns they were born. The present Prime Minister, Theresa May, is the third Prime Minister to have been born in
Records of Prime Ministers of the United Kingdom been military generals: Lord Shelburne, Prime Minister in 1782–83, who was promoted from Lieutenant-General to full General in the British Army in the latter year, and the Duke of Wellington, who achieved the supreme rank of Field Marshal in 1813. He was Prime Minister twice, in 1828–30 and 1834, in the interval between his two terms as Commander-in-Chief of the Forces. During his military career he took part in some 60 battles, seeing more wartime combat than any other future Prime Minister. No future Prime Ministers have yet served in the flying services, although Neville Chamberlain, Prime Minister in 1937–40,