The battalion commander or colonel should give a critique after each exercise, pointing out all errors of tactics and of execution. There should be much more of tactical instruction and less of mechanical training in battalion work than in the company. Majors should not be limited to these drill periods to instruct their officers but be allowed to have tactical walks at other times. A major should have a good knowledge of tactics, be able to give clear and concise orders and enter into the spirit of his work. Four good companies, under a competent major learn with very little practice to work together as a team and become an efficient battalion. THE REGIMENT [Sidenote: Regimental training] In the period alloted to the regiment the solution of tactical problems and thereby the gaining of experience in team work and imparting tactical instruction to the officers are the ends sought. The same rules as to method of control, giving of orders and critique apply as in the case of the battalion. The colonel is responsible for the training of his regiment. It is not trained until the three battalions, the band, machine gun platoon and mounted detachment are trained, each in its special work, and then the whole is practiced as a team. The training of the twelve companies, as such and as battalions, has been discussed. [Sidenote: Band] The band forms a large part numerically of the sanitary detachment of the regiment in battle. It must be trained and made efficient. This should be done by the officers of the Medical Corps serving with the regiment. There should be no perfunctory performance of this work; the colonel should see that it is thoroughly done. [Sidenote: Machine gun platoon] The officer in command of the machine gun platoon must not only instruct his men in the care and working of the guns, but in the proper care of all his equipment, including the animals. The machine gun is an emergency weapon; the commander of the machine gun company must thoroughly understand the tactical use of this weapon and be able to act as circumstances demand even without instructions. [Sidenote: Mounted detachment] The mounted detachment must be trained as scouts. [Sidenote: Objects sought in regimental training] The principal objects sought in the regimental period are practice and experience by the colonel in handling his regiment as a whole, practice by the regiment in team work, and tactical instruction for all. A practical knowledge of tactics on the part of the colonel is essential if these exercises are to be correctly carried out and his critique of value. Overlooking tactical errors in these exercises does much harm, younger officers gain wrong ideas and it is hard to eradicate errors once firmly fixed in the mind.