Lessons Learned, Headquarters, 4th Psychological Operations Group Open PDF Document Details Document Type Technical Report Publication Date Jul 31, 1968 Accession Number AD0394111 Entities Organizations Adjutant General's Corps Tags Communities of Interest Biomedical Human Systems Weapons Technologies DTIC Thesaurus Topics Aircrafts Behavioral Sciences Control Systems Employment Governments Health Lessons Learned Logistics Loudspeakers National Security Personnel Management Psychological Operations Security Task Forces Training Vehicles Warfare