[9] He obtained command of a cavalry regiment in Ireland in 1683,[10] and having received an appointment at court on the accession of James II, he served against the Duke of Monmouth at the Battle of Sedgemoor in July 1685.
[15] Nevertheless, he subsequently joined the forces of William of Orange, by whom he was made colonel of the Queen's Troop of Horse Guards on 20 April 1689.
He accompanied William in his Irish campaign, debarking with him in Carrickfergus on 14 June 1690[16] and commanded this troop at the Battle of the Boyne in July 1690.
[24] Following the dismissal of the Duke of Marlborough, Ormonde was appointed Commander-in-Chief of the Forces and colonel of the 1st Regiment of Foot Guards on 4 January 1712[25] and Captain-General on 26 February 1712.
[28] He played a dramatic role at the notorious meeting of the Privy Council on 8 March 1711 when Antoine de Guiscard, a French double agent who was being questioned about his treasonable activities, attempted to assassinate Robert Harley, 1st Earl of Oxford, against whom he had a personal grudge for drastically cutting his allowance, by stabbing him with a penknife (how he managed to get into the Council room with a weapon remains a mystery).
[30] Harley was wounded, but not seriously, due largely to the fact that he was wearing a heavy gold brocade waistcoat, in which the knife got stuck.
[34] Once there he allowed himself to be made the tool of the Tory ministry, whose policy was to carry on the war in the Netherlands while giving secret orders to Ormonde to take no active part in supporting their allies under Prince Eugene.
[35] In July 1712 Ormonde advised Prince Eugene that he could no longer support the siege of Quesnoy and that he was withdrawing the British troops from the action and instead intended to take possession of Dunkirk.
[38] Ormonde's position as Captain-General made him a personage of much importance in the crisis brought about by the death of Queen Anne and, during the last years of Queen Anne, Ormonde almost certainly had Jacobite leanings and corresponded with the Jacobite Court including his cousin, Piers Butler, 3rd Viscount Galmoye, who kept barrels of gunpowder at Kilkenny Castle.
[43] He might have avoided the impending storm of parliamentary prosecution, if he had remained in England and stood trial but instead he chose to flee to France in August 1715[44] and initially stayed in Paris with Lord Bolingbroke.
1. c. 8 (I)), extinguishing the regalities and liberties of the county palatine of Tipperary; for vesting his estate in the crown[49] and for giving a reward of £10,000 for his apprehension, should he attempt to land in Ireland.
[53] He later took part in a Spanish and Jacobite plan to invade England and put James Francis Edward Stuart on the British throne in 1719, but his fleet was disbanded by a storm in the Bay of Biscay.
[57] Ormonde died at Avignon in exile on 16 November 1745, but his body was brought back to London and buried in Westminster Abbey on 22 May 1746.