else that made him decide very quickly to concentrate the Flight's frightfulness on the two-seaters. The three were bombers, and from their slow and heavy flight obviously fully loaded with bombs, and from the direction they were taking were clearly out on a bombing raid over the British lines. Now these Hun raids and bomb-droppings had been becoming unpleasantly frequent for a little time before this, and all our patrols had special orders to keep a sharp look-out for bombers and make things as hot for them as possible. The Hun was coming to specialise on rapid dashes over our lines, the hurried dropping of their eggs, and a hasty bee-line flight for home. Our infantry and our batteries were a good deal annoyed by these attentions, and naturally and very simply wanted to know why our flying men didn't "stop these blighters coming and going as they liked." This, of course, is a delusion of the men on the ground. The Huns were very far from doing as they liked, but since the air (for flying purposes) is twenty odd thousand feet high, and as long as the line, it takes a lot of policing against tip-and-run raids, especially when you remember that machines can pass within quite a few hundred yards of each other and never know the other is there. The groundlings don't recognise these facts, much less the incidental possibilities of Huns sneaking over under cover of clouds and so on, and it must be confessed the airmen, as a rule, don't take many pains to enlighten them, even when they do get talking together. On the ground, again, they know nothing of the Hun bombers chased back and brought down well behind their own lines, and nothing of the raids which are caught and interrupted, as the one I'm telling of was about to be. All this is by the way, but it explains why Ailie was specially keen to out the bombing machines first of all, and also why the bombers at the first sign of attack on them dropped their noses and went off at a rush, and the Hun fighters hurriedly dived in to divert the Flight and force a fight with them. We need not at the moment follow the details of the whole fight, but see rather how the one man Ailie fared in it. But, incidentally, it may be mentioned that the rest of the Flight sank one bomber and chased the other down to the ground, fought the escort and sank three of them at a cost of no more than one pilot wounded, a great many bullet holes in the machines, and one badly crippled and just able to reach and land on our side of the lines.