In connection with the carrying of guns upon an aeroplane, it may be mentioned that a light machine-gun has already been fitted to a biplane; but little has been said about such tests, and nothing definite, in the way of experiments, has, as yet, been recorded.

In connection with the aerial battles that are certain to precede the land actions of the future, it is difficult to foresee, exactly, what method will be pursued by the Commanders of two rival Air Battalions. It is fairly clear, however, that each will seek to prevent a hostile aeroplane from coming within observation distance of his forces; and, at the same time, by such strategy as wide detours, each will endeavour to slip reconnoitring craft through the enemy’s lines.

In the elaboration of any such plans of campaign, it is obvious that the fighting units of the air-fleet—the fast "cruisers" which will carry machine-guns—will come into speedy conflict. Combat, probably, will resolve itself into a question of manoeuvring for position; then the opponents will open fire. Marksmanship and skill in handling a machine will spell all the difference between victory and defeat. After a preliminary exchange of shots, two machines will sweep into closer range, and then one of them, "winged" by well-directed fire, will be put out of action, and will flutter away earthwards.

It is obvious that an exceptionally fast, high-powered aeroplane, capable of rising at a maximum speed, will be most suitable for hostile work against other machines.

The question has been discussed as to protecting, with some form of armour, the vital parts of aircraft for offensive work. It seems likely that some such plan will be adopted.

II. An encounter in the air—Importance to an army of an aerial victory.

It was the late Captain Ferber—one of the first military enthusiasts in
France upon the subject of the aeroplane—who was asked the question:
"How will a fight take place between aeroplanes?" In reply, this famous
pioneer said:—

"In the same way as all fights between birds have ever taken place. When a falcon, for in stance, wants to attack a raven, it first pursues it; and, as soon as the raven finds itself overhauled, it ascends slowly, in spirals, and the falcon starts to rise in a parallel fine. If the raven can rise higher than the falcon, it is saved; if it cannot, its resource is to drop to earth, although during the descent it is liable to be hemmed in by the falcon. Every time the falcon darts upon the raven, the latter will try, by means of a clever side-slip, to avoid the impact. If the falcon has been dodged, there is a respite, for, carried beyond its aim, the falcon loses an elevation which it must painfully regain. The race for altitude may recommence, but now the flight is no longer doubtful; the raven will finally come to the ground, and will be vanquished. In a like manner, will aerial craft struggle."

An ability to "climb" rapidly, combined with high speed will, indeed, prove invaluable to the fighting aeroplane. If it can do so, it will undoubtedly seek to rise above an antagonist, and destroy it with a well-directed missile. If two machines are equally well-matched in the matter of rapid soaring and speed, their pilots will then exercise all possible skill in manoeuvring for position for an effective shot from whatever form of light machine-gun is carried.

The certainty that aerial fighting will precede any future battle in which aeroplanes are employed, indicates the necessity to build an air-fleet comprising several types of machines. In the first place, there will be need for an aircraft, either a large monoplane, or an exceptionally fast biplane, which will carry a machine-gun, or a gun throwing an explosive shell. This machine should act purely as an offensive unit, going in advance of other craft, and meeting the enemy’s "air cruisers" in combat.