Lessons Learned, Headquarters 577th Engineer Battalion(Construction) Open PDF Document Details Document Type Technical Report Publication Date Oct 31, 1969 Accession Number AD0866373 Entities Organizations Adjutant General's Corps Tags Communities of Interest Weapons Technologies DTIC Thesaurus Topics Abstracts Army Artillery Bridges Construction Engineers Lessons Learned Maintenance Materials Observation Rain Retaining Walls Security Tow Bars Training United States Vehicles