Section stitched with card wraps, note written in ink to the top of front cover that reads: "This supersedes Notes on Field Defences and Notes from the Front Parts II, III & IV, See S.C.O 769 30/3/16", some light wear to edges and small marks, rusted staples but otherwise in Very Good condition. First edition, pp 76, b&w illustrations and colour fold out diagrams, index. Featuring detailed illustrations and diagrams showing how to set up defences such as entanglements and flare pits. SCARCE.