The special branch of military administration in the hands of the commander-in-chief was that relating to the men. The care of material of war was committed to the ancient and efficient Office of Ordnance. At the Restoration the old post of Master of the Ordnance was revived with the title of master-general; and in 1683 the Department was admirably reorganised, as has been seen, by the Duke of York. At the head stood, of course, the master-general; next under him were two officers of two distinct branches, the lieutenant-general and the surveyor-general. The lieutenant-general was charged with the duty of estimating the amount of stores required for the Navy and the Army, and of making contracts for the supply of the same; he was also responsible for the maintenance of marching trains for service in the field, and for the general efficiency of the artillery both as regards guns and men. His first assistant was named the master-gunner. The surveyor-general was responsible for the custody and care of all stores, and for all services relative to engineering; his first assistant was called the principal engineer. Transport of ordnance by land was the care of a waggon-master, transport by water of a purveyor. The laboratory was committed to a fire-master, whose duties included the preparation of fireworks for festive occasions. The only weak point of the office was the exclusiveness of its jurisdiction over artillery and engineers, which was carried to such a pitch that all commissions in the two corps were signed by the master-general, though that functionary and his staff received their own commissions from the commander-in-chief.