Lessons Learned, Headquarters, 4th Infantry Division Open PDF Document Details Document Type Technical Report Publication Date Dec 04, 1969 Accession Number AD0508140 Entities Organizations Adjutant General's Corps Tags Communities of Interest Biomedical Human Systems Sensors Weapons Technologies DTIC Thesaurus Topics Ammunition Armored Personnel Carriers Artillery Detectors Employment Enlisted Personnel Health Services Indirect Fire Lessons Learned Medical Personnel Military Science Organizational Structure Personnel Management Psychological Operations Small Arms Surveillance Warfare