The Duke of Lancaster's Own Yeomanry (DLOY) was a yeomanry unit of the British Army from 1798 to 1992. Originally raised as part-time cavalry for home defence and internal security, the regiment sent mounted infantry to serve in the Second Boer War. During World War I it carried out mounted duties in Egypt and Palestine and on the Western Front. By 1917 the reserve units at home had become cyclists and the regiment serving on the Western Front joined an infantry battalion, seeing action at the Battle of Passchendaele, against the German Spring Offensive and in the final Allied Hundred Days Offensive. At the beginning of World War II the regiment gave up its horses and formed two regiments of medium artillery, which served in the Middle East, Italy and North West Europe. Postwar it became a
