The undertaking bristled with difficulties. We should be wrong, were we in France, to suppose that we are the only people the story of whose aviation has been marked by crises. Our Allies, though their practical nature is proverbial among us, were forced to experiment and grope their way for a long time before they could arrive at a solution of the many knotty problems of aerial defence. A complete lack of any central authority, a division or responsibility between the various staffs, nobody to decide as to how machines should be employed or how built, waste of every kind--the English have experienced all these troubles. But how admirably they have surmounted them! The proof is that now the only resource of the Germans is a servile imitation. This spirit of imitation among the Germans has shown itself most markedly in these last weeks, during the process of the Battle of the Ancre. The Germans set out by collecting a large number of aeroplanes on a very narrow front. Then they began to show some signs of taking the initiative with a daring to which we were little accustomed. Did they really hope to wrest the mastery of the air from the English? I do not know. In any case their attempt began badly; for when, 40 in number, they met 30 of the British machines, they could discover no better way of saving themselves than by flight, after a quarter of their number had been put out of action. It was about this time that General von Groener, a man of energy and resolution, called upon the German aeroplane factories to increase their output; and that Mr. Lloyd George in England, while giving publicity to this new effort of Germany, exhorted his fellow-countrymen not to allow themselves to be overtaken by their enemy. Boelcke may rest in peace. His land of promise can only grow greater and breed birds more rapidly. After this, what need one say more of the technical skill and the often heroic courage of the British aviator? The French and British airmen form, indeed, one great family of heroes, and our men have, in King George's Army, cousins who are as like them as brothers. At this point I will do no more than offer for your consideration a document and a story. The document is a letter, sent from Germany to his friends by an English aviator, Lieutenant Tudor-Hart, on the 25th of this July. I should blame myself were I to alter one word of it. "I was," he writes, "with Captain Webb at between 12,000 and 15,000 feet above the German lines, when we saw eight German machines coming towards us from the South-west. They were higher than we were, and we went towards them to attack them. Two of them passed about 300 yards above our heads. I opened fire on one and they replied together.