How wireless telegraphy will aid the military airman may readily be seen. It will, in the first instance, be a remarkable time-saver. Instead of returning to Headquarters with a brief and urgent report, the observation officer in an aeroplane will be able to transmit it instantaneously, while still flying on his course. In the case of machines not equipped with a wireless installation, a reconnoitring flight will need to be followed by a return journey to the aeroplane camp. Then the airman’s message will have to be brought along to Headquarters. Thus there will be some delay, although this can, of course, be reduced to a minimum by sound organisation. But the fitting of a wireless apparatus will obviate, at one stroke, all delay occasioned by a machine flying back from the district over which it is reconnoitring, by the descent at the military camp, and by the conveying of the news to Headquarters. It is not likely, however, that every machine will be fitted with a wireless outfit. In an aerial reconnaissance under ordinary conditions—made, say, during the early morning or evening, to show the general disposition of an enemy at a specified time—it will be sufficient if the airmen return to their starting-point, and the news is brought to Headquarters in the ordinary way. There will not, in such cases, be sufficient urgency to justify the use of wireless messages. But, under many circumstances which will arise during war, a machine which can flash back frequent messages, without losing the time of actually flying back with them, will be of almost inestimable value. Let us take, for example, the position of a Commander-in-Chief who is in the act of delivering a heavy attack, and wishes to know, from moment to moment if possible, how the onslaught is being withstood, and if there is any tendency on the part of his enemy to retreat. In such a case a special aeroplane, fitted with wireless, would be dispatched, to fly in circles over the fighting area; and a portable receiving apparatus would be moved up close beside the point where the Commander-in-Chief had stationed himself. In this way, news could be received in the form of a constant stream of messages. This is only one instance of the practical utility of wireless telegraphy from an aeroplane during wartime; many others, naturally, present themselves. In the course of a battle, the officer commanding aeroplanes should always have, ready for an emergency, one or two machines which are equipped with wireless. Thus, immediately any point arises regarding a movement of the enemy, upon which the Commander-in-Chief desires speedy enlightenment, a machine can be sent off without a moment’s delay; and the information, once obtained, can be flashed back by wireless a second or so after the observation officer has made his reconnaissance.