Lessons Learned, Headquarters, 39th Engineer Battalion (Combat) Open PDF Document Details Document Type Technical Report Publication Date Apr 30, 1970 Accession Number AD0510865 Entities Organizations Adjutant General's Corps Tags Communities of Interest Weapons Technologies DTIC Thesaurus Topics Army Army Aviation Artillery Concrete Construction Construction Equipment Engineers Lessons Learned Logistics Logistics Support Operational Readiness Reinforced Concrete Schools Security Three Dimensional United States Warfare