Lessons Learned, Headquarters, 31st Engineer Battalion Open PDF Document Details Document Type Technical Report Publication Date Aug 08, 1969 Accession Number AD0860345 Entities Organizations Adjutant General's Corps Tags Communities of Interest Air Platforms Weapons Technologies DTIC Thesaurus Topics Air Force Facilities Aircrafts Army Artillery Construction Engineering Engineers Inner Tubes Landing Fields Lessons Learned Munitions Rotary Wing Aircraft Schools Standing Wave Ratios Standing Waves Test And Evaluation United States