Lessons Learned, Headquarters, 23d Artillery Group Open PDF Document Details Document Type Technical Report Publication Date Aug 12, 1969 Accession Number AD0506352 Entities Organizations Adjutant General's Corps Tags Communities of Interest Weapons Technologies DTIC Thesaurus Topics Aircrafts Artillery Artillery Units Chronometers Civic Action Damage Assessment Fixed Wing Aircraft Lessons Learned Materials Military History Military Science Rotary Wing Aircraft Self Propelled Self Propelled Guns Training United States Warfare