Lessons Learned, Headquarters, 169th Engineer Battalion Open PDF Document Details Document Type Technical Report Publication Date Aug 15, 1969 Accession Number AD0861670 Entities Organizations Adjutant General's Corps Tags Communities of Interest Biomedical Cyber Weapons Technologies DTIC Thesaurus Topics Abstracts Ammunition Army Artillery Civic Action Concrete Construction Construction Materials Drilling Engineers Engines Lessons Learned Maintenance Materials Military Publications Munitions Personnel Management