Lessons Learned, Headquarters, 538th Engineer Battalion Open PDF Document Details Document Type Technical Report Publication Date Jan 31, 1970 Accession Number AD0871049 Entities Organizations Adjutant General's Corps Tags Communities of Interest Biomedical Weapons Technologies DTIC Thesaurus Topics Artillery Concrete Construction Employment Engineers Enlisted Personnel Groundwater Lessons Learned Maintenance Management Personnel Materials Personnel Management Photographs Security Standards Training United States