Lessons Learned, Headquarters, 809th Engineer Battalion (Construction) Open PDF Document Details Document Type Technical Report Publication Date Apr 30, 1969 Accession Number AD0859333 Entities Organizations Adjutant General's Corps Tags Communities of Interest Air Platforms Biomedical Human Systems DTIC Thesaurus Topics Aircrafts Artillery Concrete Construction Critical Path Methods Engineers Excavation Instructions Lessons Learned Logistics Management Personnel Materials Observation Procurement Shortages (Logistics) Test And Evaluation United States