would mean his forced surrender, for retreat would not save him. His aerial foes would be always quicker than he, even his quickest motor transport, and would bombard him from the skies. So that the mastery of the sky would ensure the victory for any army. The development of the aeroplane is full of the most startling possibilities. Already it has far outflown the vision of its inventors, for, a very short time ago it seems, one of the Voisin _frères_ declared to me that the aeroplane would never be other than a rich man’s hobby, of little use in war-time other than the dropping of a few explosives. My informant has since trodden the path of so many brave pilots, but had he lived he would have admitted to-day that the possibilities of the aeroplane seem limitless. The appearance of the Sikorski machine in Russia carrying five or six men in its cabin encourages the belief that the aerobus will soon be a practical reality, and the imagination is fired by the prospect of the air humming with giant aeroplanes, which, by the way, the Germans also attempted to use during the war. There is more than a possibility—so many surprising things have happened—that, in the future, commanders will have aerial motor lorries at their disposal for the rapid transport of their troops. Thus strategy and the physiognomy of the fight would be completely changed. It would effect a complete metamorphosis. The commander who possessed this aerial fleet would be able to carry the whole of his army with the speed and ease of the magic carpet of the _Arabian Nights_ to some distant point and descend even into the enemy country. Nevertheless, as M. Blanchon in the _Revue des Deux Mondes_ suggests, the General who resorted to these aerial methods could not carry out normal military operations for the reason that his _matériel_ must go by road. But when the science of air-transport is sufficiently advanced to allow armies to pass in the sky, presumedly that army will know how to take care of its lines of communication. These are dreams of the future, however, and their realisation is problematical. But the vision which is in no wise uncertain—the vision which will be realised in the near future, is that of vast armies of wings gathered in the sky. Nations will no longer possess fleets of hundreds of aeroplanes, but tens of thousands will lie in readiness to skim into enemy country and scatter terror and death over vast areas. The nations that plunge into war will no longer pledge only their fighting men; they will enter into battle knowing that their women and children must also endure the worst agony of horror, for modern science has destroyed civilised warfare, and modern man has joined hands with primitive man and wars upon the innocent and helpless.