LESSONS LEARNED, HEADQUARTERS, 20TH ENGINEER BATTALION (COMBAT) Open PDF Document Details Document Type Technical Report Publication Date Nov 13, 1967 Accession Number AD0828720 Entities Organizations Adjutant General's Corps Tags Communities of Interest Biomedical Human Systems DTIC Thesaurus Topics Aircrafts Civil Affairs Concrete Construction Construction Materials Corporations Employment Engineers Lessons Learned Military Science Munitions Personnel Management Security Training United States Vehicles Warfare