 Ṣẹkún gbólóhùn tó tẹ lé e yìí: A gbé e lọ sí Netherlands ní ọdún 1707, ó bá Duke ti Marlborough jagun ní : Ogun ti Oudenarde ni 1708, ṣe aṣeyọri Nicholas FitzGerald gẹgẹbi ọgagun ti regiment kan 7 August 1708, o si paṣẹ fun regiment ti ODonnell ti brigade ni awọn ipolongo ti 1709  1712, pẹlu Ogun ti Malplaquet ati idaabobo ti Awọn ila ti Arleux, ti Denain, Douai, Bouchain, ati Quesnoy. O si sìn labẹ Marshal Villars ni Germany, ni awọn sieges ti Landau ati Freiberg, ati awọn forcing ti General Vaubonne ká entrenchments, eyi ti o yori si awọn alaafia ti Rastatt laarin Germany ati France ni March 1714. Ni ibamu pẹlu aṣẹ ti ọjọ 6 Kínní 1715, a ṣe atunṣe ọmọ ogun ODonnell, idaji kan ni a gbe lọ si ọmọ ogun Colonel Francis Lee, idaji keji si ti Major-General Murrough OBrien, eyiti ODonnell ti sopọ si bi atunto tabi ọga agba afikun. Ó di brigadier-general ní 1 February 1719, ó sì fẹyìn tì ní St. Germain-en-Laye, níbi tí ó kú láìní ọmọ ní 7 July 1735. 