The 7th Queen's Own Hussars was a cavalry regiment in the British Army, first formed in 1690. It saw service for three centuries, including the First World War and the Second World War. The regiment survived the immediate post-war reduction in forces, but was slated for reduction in the 1957 Defence White Paper, and was amalgamated with the 3rd The King's Own Hussars, to form the Queen's Own Hussars in 1958. From Wikipedia with thanks.
The Commonwealth War Graves Commission has 80 recorded WW1 deaths for the 7th (Queen's Own) Hussars. Douglas Haig was commissioned as a Lieutenant into this regiment in 1885.
GANT, Charles George. Private, H/45554. 7th (Queen's Own) Hussars, On Attachment To :- Royal Horse Guards. Etaples Military Cemetery, Pas-de-Calais, France. 22-05-1918. Age 38. Son of George & Emma Gant of Colchester, Essex, UK. Husband of Beatrice Mary Gant of Angel Road, New Catton, Norwich, Norfolk, UK.