Whakaotihia te rerenga e whai ake nei: Ko te reimana, i noho ki Meerut i Inia i te timatanga o te pakanga, i eke ki Marseille hei waahanga o te 7th (Meerut) Cavalry Brigade i roto i te 2nd Indian Cavalry Division i te Tihema 1914 mo te mahi i te Western Front. Na ka neke te reimana ki Mesopotamia, me te pereki ano, i te Hurae 1916. I whai wāhi te rārangi ki te
Te Pakanga Tuarua o Kut i te Hui-tanguru 1917, te hopu o Baghdad i te Poutu-te-rangi 1917 me te Pakanga o Sharqat i te Oketopa 1918. I Sharquat i whakaekea e te pu i te pukepuke i reira nga pupuhi Turiki, a ka whakaekea e ia me nga bayonet pumau, i angitu te hopu i nga pupuhi: I mohio a İsmail Hakkı Bey, te rangatira Turiki, ki nga korerorero rangimarie i Mudros, ka whakatau ia ki te whakaora i ana tangata kaua ki te whawhai, ki te pakaru ranei, ka tuku i te 30 o Oketopa 1918. I te tau 1922 ka whakakotahihia te reima me te 18th Royal Hussars ki te hanga i te 13th/18th Royal Hussars.