In April 1918 in response to the German spring offensive in France, every available man that could be spared was sent to reinforce the British Expeditionary Force on the Western Front. The Desert Mounted Corps lost the majority of its yeomanry regiments, who were dismounted and retrained to serve as infantry or machine-gun companies. This necessitated the disbandment of the Yeomanry Mounted Division. Which could have had serious consequences on the corps future operations. But the yeomanry were replaced in theatre by experienced British Indian Army cavalry regiments, that had been fighting in France since 1914. Allenby used these new regiments to raise two new divisions. The 4th Cavalry Division with the 10th Cavalry, 11th Cavalry and 12th Cavalry Brigades. The 5th Cavalry Division was slightly different having the 13th Cavalry, 14th Cavalry and the 15th (Imperial Service) Cavalry Brigades.