I te tau 1737, i whakawhiwhia a Elliot hei rangatira mo te 2nd Troop of Horse Grenadier Guards, i whakawhiwhia ai ia hei kaikawe-koroneela i te tau 1741. I whawhai ia ki Dettingen e rua
a Fontenoy, engari i whakarerea tana komihana i te tau 1746. Ko te tama a tana tuahine matua, a George Augustus Eliott (i muri mai ko Lord Heathfield, kaitiaki o Gibraltar), tetahi o ana rangatira rangatira i te 2nd Troop of Horse Grenadier Guards.