Army Regulation 20-1, Inspector General Activities and Procedures, 23 MAR 2020 Army Regulation 1-201, Army Inspection Policy, 25 FEB 2015 DA Form 1559 (Inspector General Action Request) Principal Official Guidance - The Inspector General (CAC required) Senior Official Front Office Training Package (CAC required) Inspector General Reference Guide Intelligence Oversight Guide The Assistance and Investigations Guide The Inspections Guide The Organizational Inspection Program (OIP) Guide for Commanders The Teaching and Training Guide