Final answer:
Army Regulation 380-5 contains policies for handling unauthorized disclosure of classified documents and provides guidance for commanders on security incidents.
Step-by-step explanation:
The Army regulation that contains both the Army policy for handling the unauthorized disclosure of classified documents and other security incidents, as well as general guidance for commanders, is Army Regulation 380-5. This document outlines procedures for safeguarding classified information, reporting breaches of security, and outlining the responsibilities of Army personnel in maintaining operational security. Commanders are directed to follow specific protocols when unauthorized disclosures occur to mitigate potential damage and prevent future incidents.