The Capitaine-Instructeur is deputed to attend to the instruction of the non-commissioned officers of the regiment, and is held responsible for their efficiency in matters of drill and discipline. He also lectures junior officers on their duties with regard to drill, shooting, veterinary matters, topography, etc., and he is specially responsible that the adjutants of the regiment perform their duties properly. Of officers of the rank of captain, two are appointed to each squadron, the senior being the Capitaine Commandant and the junior the Capitaine en second, or junior captain. The senior captain is in charge of the squadron, which in peace time has a strength of about 120 officers and men, but for active service has its strength raised considerably. He is responsible for the military education of his squadron, for the discipline of the rank and file, and the condition of the horses and stables, and he is also responsible for the pay and supplies of the squadron handed over to him by the paymaster and others. He has control of the promotion of non-commissioned officers and the leave granted to non-commissioned officers and men. He is responsible to the Chef d'Escadron for the efficient performance of his duties. The second captain of each squadron is, as regards squadron duties, under the orders of the captain commanding, and is especially concerned with all matters affecting food supplies. In addition to his squadron duties, he has to take his turn every fifth week as "captain of the week," when he has to supervise roll calls and assemblies, and the mounting and dismounting of guards. As captain of the week he supervises the cleanliness and security of the barracks and the work of the police. Of lieutenants and sub-lieutenants, four are appointed to each squadron, each being responsible for a _peloton_ or troop of men. Responsible to the senior captain of the squadron for the performance of his duties, the lieutenant is expected to instruct his men at drill, supervise their work in stables, and see that their barrack rooms are properly kept. The lieutenant is empowered to hold such inspections of kit and clothes as he may think necessary. To every regiment two doctors are appointed, holding the ranks of captain and lieutenant respectively. Each regiment of cavalry and artillery is also provided with two veterinary surgeons. As the duties of these officers are of a non-combatant nature, they are not materially concerned with the discipline or military efficiency of the regiment to which they are attached.