LESSONS LEARNED, HEADQUARTERS, 45TH ENGINEER GROUP (CONSTRUCTION) Open PDF Document Details Document Type Technical Report Publication Date Nov 15, 1966 Accession Number AD0824761 Entities Organizations Adjutant General's Corps Tags Communities of Interest Human Systems DTIC Thesaurus Topics Aircrafts Army Aviation Personnel Civic Action Combat Support Construction Drilling Drills Engineers Enlisted Personnel Lessons Learned Rock Drilling Security United States Warfare