The board of supervisors shall provide for the organization and supervision and determine the number and the compensation of the police officers. The position of police officer is incompatible with the office of supervisor, auditor, tax collector and manager. The chairman of the board of supervisors may swear in police officers. The board of supervisors may assign any police officer to undergo a course of training at any training school for police officers established or made available by the Federal or State Government and provide for payment of the officer's expenses while in attendance at the training school.
53 P.S. § 66902