[1][2] In 1690–91, Nugent fought in the Irish campaign, in support of King James, during the Williamite War in Ireland.
After the siege of Limerick in 1691, Nugent joined the Imperial regiment of Irish under Prince George of Hesse-Darmstadt in 1692,[3] entering into service for the Habsburgs, as being a Roman Catholic, he was unable to be commissioned in the British Army.
[5] Two days later, on 6 August 1704, Nugent was appointed Governor of Gibraltar,[6] with the rank of Major General.
[1][6] He was described as "an Irish Catholic, not well regarded by the English" (Spanish: un católico irlandes, mal visto por los ingleses).
His death was caused by wounds sustained at San Pablo Battery (North Bastion).