In May 1916, the Regiment reassembled and became Corps Cavalry to II Corps, with whom it remained until November 1917, when it was transferred to the Cavalry Corps. Up to this time, its only chance of mounted action had been during the German retreat to the Hindenburg Line in April 1917. The regiment was present at the battles of the Somme (1916), the Ancre, the Somme (1917) and Ypres (1917). Although in these battles there was no mounted fighting, the men were often called upon to support infantry attacks with their Hotchkiss machine guns.