 Complete the following phrase:  Being mounted infantry the regiment rode into battle on their horses, but were expected to dismount and fight on foot. The regiment fought predomitly against the forces of the Ottoman Turkish Empire. Their first involvement came in the Gallipoli Campaign between May and December 1915, during which they participated in the largest battle of that theatre at Chunuk Bair and the fighting for Hill 60. Evacuated to Egypt, they then took part in the Sinai and Palestine Campaign from 1916 to 1918. The early battles they were involved in included those at Romani, Gaza and Beersheba. Later in the war they were part of the force that occupied the Jordan Valley, and took part in the raids on Amman and Es Salt. Their final wartime operation was in connection with the capture of the Turkish Fourth Army. During the four years of war the regiment lost 334 men dead from all causes, while another 720 were wounded or debilitated. After the war, the regiment played a minor role in the 