It shall be the duty of the commissioner, subject to the laws of this state, to arrange for the enlistment and examination of applicants for service as troopers or officers of the Uniform Division of the Department of Public Safety, to provide the necessary preliminary training and subsequent instruction of troopers and recruits as peace officers of this state, and to make all necessary rules and regulations for the discipline, conduct, and control of all officers, troopers, and other employees of the department.