First of all, in aerial warfare, there will come a chase between the light, fast-flying scouts and the armoured planes which will be on watch for them. As two armies approach each other, upon the eve of battle, there will be one definite question which a Commander-in-Chief will ask of the officer who is in command of his aeroplanes. He will say: “Find out for me how the enemy is massing his men.” This information will be needed as quickly as it can be obtained; unless he knows, approximately, the formation of his opponent’s troops, he will be unable to plan the disposition of his own forces. To obtain this news, without a moment’s waste of time, the officer in charge of the aeroplanes will send out high-speed scouts--expert officers, mounted upon single-seated craft; just as, in the days before flying, the Duke of Wellington would choose special men, mount them upon picked horses, and send them out to obtain news at all costs. These high-speed scouts, flying at more than 100 miles an hour, will sweep in towards the enemy, seeking the shelter of clouds or of banks of mist, and making long detours when necessary so as to try and avoid the patrols. It will be the same story in the air as was told formerly on land; there will be the spy trying to creep through, and the chain of flying outposts making it their business to stop him. Speedy in flight, and yet carrying a formidable gun, these patrols will rush upon the unarmed scout and strive to put him out of action. His only protection will be his speed. He will wheel, dodge, and eventually turn tail. All the time his aim will be to see what lies below him, to watch the marchings of the troops which will look so tiny and remote, and form an opinion in his mind as to what the battle line will be. These single scouts will need to be picked men. A great responsibility will be theirs, and a great risk also. They will, in fact, take their lives in their hands, and nothing will save them from being sent crashing to their death but their own wit and skill in the handling of their machines.