There is, I believe, only one grade higher possible. The success of B2 depends upon the completeness of the aerial observation. The invention of an anti-aircraft gun which would be practically sure of hitting and bringing down an aeroplane at any height whatever up to 20,000 feet, would restore the defensive and establish what I should think must be the final grade of war, A3. But at present nothing of the sort exists and nothing of the sort is likely to exist for a very long time; at present hitting an aeroplane by any sort of gun at all is a rare and uncertain achievement. Such a gun is not impossible and therefore we must suppose such a gun will some day be constructed, but it will be of a novel type and character, unlike anything at present in existence. The grade of fighting that I was privileged to witness on the Somme, the grade at which a steady successful offensive is possible, is therefore, I conclude, the grade at which the present war will end.
2
But now having thus spread out the broad theory of the business, let me go on to tell some of the actualities of the Somme offensive. They key fact upon both British and French fronts was the complete ascendancy of the Allies aeroplanes. It is the necessary preliminary condition for the method upon which the great generals of the French army rely in this sanitary task of shoving the German Thing off the soil of Belgium and France back into its own land. A man who is frequently throwing out prophecies is bound to score a few successes, and one that I may legitimately claim is my early insistence upon that fact that the equality of the German aviator was likely to be inferior to that of his French or British rival. The ordinary German has neither the flexible quality of body, the quickness of nerve, the temperament, nor the mental habits that make a successful aviator. This idea was first put into my head by considering the way in which Germans walk and carry themselves, and by nothing the difference in nimbleness between the cyclists in the streets of German and French towns. It was confirmed by a conversation I had with a German aviator who was also a dramatist, and who came to see me upon some copyright matter in 1912. He broached the view that aviation would destroy democracy, because he said only aristocrats make aviators. (He was a man of good family.) With a duke or so in my mind I asked him why. Because, he explained, a man without aristocratic quality in tradition, cannot possibly endure the “high loneliness” of the air. That sounded rather like nonsense at the time, and then I reflected that for a Prussian that might be true. There may be something in the German composition that does demand association and the support of pride and training before dangers can be faced. The Germans are social and methodical, the French and English are by comparison chaotic and instinctive; perhaps the very readiness for a conscious orderliness that makes the German so formidable upon the ground, so thorough and fore-seeking, makes him slow and unsure in the air. At any rate the experiences of this war have seemed to carry out this hypothesis. The German aviators will not as a class stand up to those of the Allies. They are not nimble in the air. Such champions as they have produced have been men of one trick; one of their great men, Immelmann—he was put down by an English boy a month or so ago—had a sort of hawk's swoop. He would go very high and then come down at his utmost pace at his antagonist, firing his machine gun at him as he came. If he missed in this hysterical lunge, he went on down.... This does not strike the Allied aviator as very brilliant. A gentleman of that sort can sooner or later be caught on the rise by going for him over the German lines.
The first phase, then, of the highest grade offensive, the ultimate development of war regardless of expense, is the clearance of the air. Such German machines as are up are put down by fighting aviators. These last fly high; in the clear blue of the early morning they look exactly like gnats; some trail a little smoke in the sunshine; they take their machine guns in pursuit over the German lines, and the German anti-aircraft guns, the Archibalds, begin to pattern the sky about them with little balls of black smoke. From below one does not see men nor feel that men are there; it is as if it were an affair of midges. Close after the fighting machines come the photographic aeroplanes, with cameras as long as a man is high, flying low—at four or five thousand feet that is—over the enemy trenches. The Archibald leaves these latter alone; it cannot fire a shell to explode safely so soon after firing; but they are shot at with rifles and machine guns. They do not mind being shot at; only the petrol tank and the head and thorax of the pilot are to be considered vital. They will come back with forty or fifty bullet holes in the fabric. They will go under this fire along the length of the German positions exposing plate after plate; one machine will get a continuous panorama of many miles and then come back straight to the aerodrome to develop its plates.
There is no waste of time about the business, the photographs are developed as rapidly as possible. Within an hour and a half after the photographs were taken the first prints are going back into the bureau for the examination of the photographs. Both British and French air photographs are thoroughly scrutinised and marked.
An air photograph to an inexperienced eye is not a very illuminating thing; one makes our roads, blurs of wood, and rather vague buildings. But the examiner has an eye that has been in training; he is a picked man; he has at hand yesterday's photographs and last week's photographs, marked maps and all sorts of aids and records. If he is a Frenchman he is only too happy to explain his ideas and methods. Here, he will point out, is a little difference between the German trench beyond the wood since yesterday. For a number of reasons he thinks that will be a new machine gun emplacement; here at the centre of the farm wall they have been making another. This battery here—isn't it plain? Well, it's a dummy. The grass in front of it hasn't been scorched, and there's been no serious wear on the road here for a week. Presently the Germans will send one or two waggons up and down that road and instruct them to make figures of eight to imitate scorching on the grass in front of the gun. We know all about that. The real wear on the road, compare this and this and this, ends here at this spot. It turns off into the wood. There's a sort of track in the trees. Now look where the trees are just a little displaced! (This lens is rather better for that.) That's one gun. You see? Here, I will show you another....
That process goes on two or three miles behind the front line. Very clean young men in white overalls do it as if it were a labour of love. And the Germans in the trenches, the German gunners, know it is going on. They know that in the quickest possible way these observations of the aeroplane that was over them just now will go to the gunners. The careful gunner, firing by the map and marking by aeroplane, kite balloon or direct observation, will be getting onto the located guns and machine guns in another couple of hours. The French claim that they have located new batteries, got their tir de demolition upon them in and destroyed them within five hours. The British I told of that found it incredible. Every day the French print special maps showing the guns, sham guns, trenches, everything of significance behind the German lines, showing everything that has happened in the last four-and-twenty hours. It is pitiless. It is indecent. The map-making and printing goes on in the room next and most convenient to the examination of the photographs. And, as I say, the German army knows of this, and knows that it cannot prevent it because of its aerial weakness. That knowledge is not the last among the forces that is crumpling up the German resistance upon the Somme.
I visited some French guns during the tir de demolition phase. I counted nine aeroplanes and twenty-six kite balloons in the air at the same time. There was nothing German visible in the air at all.
It is a case of eyes and no eyes.
The French attack resolves itself into a triple system of gunfire. First for a day or so, or two or three days, there is demolition fire to smash up all the exactly located batteries, organisation, supports, behind the front line enemy trenches; then comes barrage fire to cut off supplies and reinforcements; then, before the advance, the hammering down fire, “heads down,” upon the trenches. When at last this stops and the infantry goes forward to rout out the trenches and the dug-outs, they go forward with a minimum of inconvenience. The first wave of attack fights, destroys, or disarms the surviving Germans and sends them back across the open to the French trenches. They run as fast as they can, hands up, and are shepherded farther back. The French set to work to turn over the captured trenches and organise themselves against any counter attack that may face the barrage fire.