Then may come a machine to carry out the important work of detailed reconnoitring. This, as has already been suggested, should be a biplane, carrying if necessary a "crew" of three—pilot, engineer, and observer. This machine would have one object only—to obtain full and accurate information concerning an enemy’s movements.

Protected by one or more "cruisers," it would probably ascend to a great height, and seek to slip by the enemy’s aerial line of defence, or make a wide detour and approach the foe from an unexpected direction.

A third type of machine should, it is held, be used for swift, comprehensive survey work. This machine, carrying merely its pilot, would be a monoplane so speedy that it would frequently be able to elude the pursuit of any armed craft, and so escape destruction.

This problem of aerial warfare is now very much in the minds of those who are concerned in the military flying work of France, Germany, and Russia. Quite recently, for example, one of Russia’s chief advisers, in the matter of war aeroplanes, declared: "It is now clear that future wars will be begun in the air, and that nations will be best prepared that are well-equipped with military aeroplanes." This statement, bearing out others previously quoted, shows how general is the view that aerial fighting will play a prominent part in any application of the aeroplane to actual war conditions.

Apart from the "cruiser" type of machine, previously described, it is suggested by many experts that a fighting aeroplane, carrying a heavier gun or guns—a sort of aerial "Dreadnought," in fact—should be constructed. The aim of such a machine would be to attack antagonists at long range.

Provided that they could vanquish aerial foes, these armed aeroplanes would, no doubt, turn their attention to the bombardment of fortifications, and land forces; and, the resistance of an enemy being crushed, the air-scouts would be free to fly where they pleased.

Thus a reverse in the air would prove a very serious matter indeed, for any army. The Commander-in-Chief would have all his plans laid bare by the unhampered movements of the enemy’s aeroplanes; and, at the same time, he would be unable to obtain any data concerning his antagonist’s dispositions. This, of course, would be apart from the damage that attacking aeroplanes might effect by bomb-dropping and machine-gun firing.

Many experts, indeed, are found to declare that a defeat in the air would be followed by a reverse on land. It is clear, at any rate, that great importance will attach to this aerial fighting.

A machine regularly equipped for aerial warfare has yet to be introduced—but it is merely a question of time, and probably a short time at that, before such a machine is built and tested.

The handling of such fighting aircraft will have to be learned, also the best modes of approaching and attacking a hostile aeroplane. Experimental machines will have to be built, and flown, and as effective manœuvres as possible carried out. But it will be a great war, of course, which will teach the real lessons concerning the offensive possibilities of the aeroplane.