 The regiment, which was serving in Mhow in India as part of the Meerut Cavalry Brigade in the Meerut Divisional Area at the start of the First World War landed in Mesopotamia in November 1915.It was involved in most of the actions during the Mesopotamian campaign before moving to Persia in May 1918.The regiment retitled as the 14th King's Hussars in January 1921 and was amalgamated with the 20th Hussars to form the 14th/20th King's Hussars in October 1922.