US Army Air Defense Employment Redeye. FM 44-23 Service on the Piece 90 mm AA Gun M2 Series. FM 44-27 Service of the Piece Multiple Gun Motor Carriages M15 and M15A1. FM 44-59 Engineer Troop Organizations and Operations. FM 5-1 Engineer Troop Units. FM 5-5 Corps of Engineers. Construction and Routes of Communication. FM 5-10 Routes of Communication. FM 5-10 Corps of Engineers. Field Fortifications. FM 5-15 Field Fortifications. FM 5-15 Corps of Engineers. Camouflage Basis Principles. FM 5-20 Camouflage of Individuals and Infantry Weapons. FM 5-20 A Camouflage of Rear Areas and Fixed Fortifications. FM 5-20G