Lessons Learned, Headquarters, 69th Engineer Battalion (Construction) Open PDF Document Details Document Type Technical Report Publication Date Aug 15, 1970 Accession Number AD0879968 Entities Organizations Adjutant General's Corps Tags Communities of Interest Weapons Technologies DTIC Thesaurus Topics Air Force Facilities Army Artillery Civic Action Concrete Construction Construction Materials Embankments Engineers Indirect Fire Landing Fields Lessons Learned Maintenance Materials Supervisors Training United States