Lessons Learned, Headquarters, 70th Engineer Battalion Open PDF Document Details Document Type Technical Report Publication Date Oct 31, 1969 Accession Number AD0865219 Entities Organizations Adjutant General's Corps Tags Communities of Interest Human Systems Weapons Technologies DTIC Thesaurus Topics Air Transportation Aircrafts Artillery Artillery Fire Concrete Construction Engineers Lessons Learned Maintenance Management Personnel Materials Military History Personnel Management Security Training United States Warfare