[28] A.M.L.O.: Assistant Military Landing Officer.
[29] Bishop, who got his V.C. for this.
[30] An indefinitely large number.
[31] Trick flying.
[32] A formidable line of trenches branching off from the main Hindenburg line of Quéant and defending Douai.
[33] A stream flowing north of Arras.
[34] Same as wind up, or fright.
[35] One of the most famous formations of enemy scouts, composed of the “crack” German pilots. Their machines generally had red bodies.
[36] A piece of aluminium shaped so as to cover the engine.
[37] A main plane is made up of two spars on which the ribs are fixed.