Lessons Learned, Headquarters, 864th Engineer Battalion (Construction) Open PDF Document Details Document Type Technical Report Publication Date Apr 20, 1969 Accession Number AD0859926 Entities Organizations Adjutant General's Corps Tags Communities of Interest Biomedical Human Systems Weapons Technologies DTIC Thesaurus Topics Artillery Civil Engineering Civilian Personnel Concrete Construction Construction Materials Employment Engineers Lessons Learned Materials Mechanics Medical Personnel Munitions Personnel Management Training Transportation United States