LESSONS LEARNED, HEADQUARTERS, 62D ENGINEER BATTALION Open PDF Document Details Document Type Technical Report Publication Date Apr 29, 1968 Accession Number AD0832270 Entities Organizations Adjutant General's Corps Tags Communities of Interest Weapons Technologies DTIC Thesaurus Topics Air Filters Concrete Construction Construction Materials Engineers Engines Ignition Ignition Systems Lessons Learned Maintenance Materials Personnel Management Retaining Walls Standards Training United States Warrant Officers