Their time as Divisional Cavalry lasted till May, 1916, but was not as full as they had hoped. ‘Our work,’ writes an Hussar Officer in a personal letter, ‘was very miscellaneous. We fetched up remounts, dug trenches, buried wires, supplied M.M.P. and orderlies to the Divisional Staff, and observation posts to the Infantry in the front line;’ and Col. Smith, of the Dragoons, writes in much the same vein: ‘They did many dull, but arduous and necessary fatigues. But they took an especial interest in the Divisional observation posts, the management of which was entrusted to them by the Division,’ and which proved, as he says in another place, ‘a definite speciality of the Regiment, and earned them considerable credit.’ The first organic change is explained in a letter from G.H.Q., dated May 2nd, 1916, and addressed to the Third Army Commander. We cite here the salient extracts: ‘In consequence of the growth of the Army and the development of the Corps Organisation, much of the independence of action and movement formerly belonging to the Division has passed to the Corps. It has been found necessary, therefore, to reconsider the organization and distribution of the Mounted Troops hitherto allotted to Divisions. ‘The allotment of these troops was originally made with a view to providing the Divisional Commander with a small mobile force under his immediate control for reconnaissance, protective and escort duties; and on the assumption (originally correct) that the Division would be moving either independently, or with one or more roads allotted to its exclusive use. ‘These conditions are unlikely to recur; any future movement will be by Corps, marching and fighting in depth on a comparatively narrow front. The mounted troops belonging to the Corps must, therefore, be assembled under the direct control of the Corps Commander, and organized as Corps units. ‘The Commander-in-Chief has accordingly decided— ‘(_a_) to convert the Squadrons of Divisional Cavalry into Corps Cavalry Regiments, composed of a Headquarters and Three Squadrons each; one Regiment being allotted to each Corps. ‘(_b_) to withdraw the Cyclist Companies from Divisions, to reconstitute them into Battalions of Three Companies each, and to allot one Battalion to each Corps. ‘(_c_) to allot one Motor Machine-Gun Battery to each Corps. This battery will normally be attached to the Cyclist Battalion.’ The following Table shows how the foregoing provisions were applied to the Squadrons of Yorkshire Dragoons and Yorkshire Hussars: