Whakaotihia te rerenga e whai ake nei: I muri i te mutunga o te pakanga i mahi te 1st Royal Berkshires i roto i te mahi a te Allied o te Rhineland. I te 16 o Hui-tanguru 1919 ka hoki a Dempsey ki te UK i runga i te hararei. I te raumati i takaro ia i nga tukinga kirikiti tuatahi e rua mo Sussex ki te Whare Wananga o Oxford me Northamptonshire. I whakahoutia te 1st Battalion i Chiseldon Camp i Wiltshire i te Pipiri 1919. I te marama o Hepetema i tukuna atu ki Iraq, i reira i awhina ai ia ki te whakakore i te
Te tutu o Iraki i te tau 1920. I te marama o Akuhata 1920, i neke te ope taua ki Iran, i reira i uru ai ki te Ropu o te Raki o Persia (Norperforce) i te Pakanga Taiao o Ruhia. I a ia e noho ana i Iran, ka uru a Dempsey ki te Pelmanism. I te mutunga o te tau 1921 ka neke ano, i tenei wa ki Bareilly, Inia, a ka riro a Dempsey i te Kamupene C, engari i te tau 1922 ka hoki ki Ingarangi mo tana hararei tuatahi i roto i te tata ki te toru tau. I hoki ia ki Inia i te mutunga o te tau i mua i tana hokinga ki Ingarangi i te tau 1923, i tenei wa ki te tango i tetahi tuunga ki te Royal Military College, Sandhurst.