Lessons Learned, Headquarters, 12th Aviation Group (Combat) Open PDF Document Details Document Type Technical Report Publication Date May 15, 1970 Accession Number AD0511151 Entities Organizations Adjutant General's Corps Tags Communities of Interest Biomedical Human Systems Weapons Technologies DTIC Thesaurus Topics Accidents Aircrafts Army Army Aviation Artillery Attack Helicopters Engineering Engineers Flight Clothing Flight Training Ground Stations Helicopters Lessons Learned Materials Schools United States Warfare