"God bless my soul, what's that?" exclaimed the Commander-in-Chief, Admiral Sir Compton Domville, who had just completed his final inspection of the defences of Portsmouth Harbour, and was standing on the roof of Southsea Castle, taking a general look round before going back to headquarters. "Here, Markham," he said, turning to the Commander of the Fort, "just telephone up to Portsdown at once and ask them what they're up to." An orderly instantly dived below to the telephone room. The Fort Commander took Sir Compton aside and said in a low voice: "I am afraid, sir, that the forts are being attacked from the air." "What's that?" replied Sir Compton, with a start. "Do you mean that infernal thing that Erskine and Castellan and the watch of the _Cormorant_ saw in the North Sea?" "Yes, sir," was the reply. "There is no reason why the enemy should not possess a whole fleet of these craft by this time, and naturally they would act in concert with the attack of the French Fleet. I've heard rumours of a terrible new explosive they've got, too, which shatters steel into splinters and poisons everyone within a dozen yards of it. If that's true and they're dropping it on the forts, they'll probably smash the guns as well. For heaven's sake, sir, let me beg of you to go back at once to headquarters! It will probably be our turn next. You will be safe there, for they're not likely to waste their shells on Government buildings." "Well, I suppose I shall be of more use there," growled Sir Compton. At this moment the orderly returned, looking rather scared. He saluted and said: "If you please, sir, they've tried Portsdown and all the Hillsea forts and can't get an answer." "Good heavens!" said the Commander-in-Chief, "that looks almost as if you were right, Markham. Signal to Squadron A to up-anchor at once and telephone to Squadron B to do the same. Telephone Gilkicker to turn all searchlights on. Now I must be off and have a talk with General Hamilton." He ran down to his pinnace and went away full speed for the harbour, but before he reached the pier another flash burst out from the direction of Fort Gilkicker, followed by a terrific roar. To those standing on the top of Southsea Castle the fort seemed turned into a volcano, spouting flame and clouds of smoke, in the midst of which they could see for an instant whirling shapes, most of which would probably be the remains of the gallant defenders, hurled into eternity before they had a chance of firing a shot at the invaders. The huge guns roared for the first and last time in the war, and the great projectiles plunged aimlessly among the ships of the squadron, carrying wreck and ruin along the line. "Our turn now, I suppose," said the Fort Commander, quietly, as he looked up and by a chance gleam of moonlight through the breaking clouds saw a dim grey, winged shape drift across the harbour entrance.