[Illustration: A BATTLE IN THE AIR The French plane at the top is maneuvering for position preparatory to swooping down on its German adversary. _Copyright by Underwood & Underwood, N.Y._] In an air battle, the machine that is higher up is thought to have the advantage. Both Ball and Immelman went up very high, but Ball was below and seemed uncertain what to do. The British were afraid that he had lost his nerve and courage when he found himself below, for he made no effort to get above his opponent, but was flying now this way and now that, as if "rattled." Immelman did not delay, but went into a nose dive directly towards the machine below, which he would be able to rake with his machine gun as he approached; but just at the proper moment, Ball suddenly looped the loop and was directly above the German, and in position to fire. As the shower of bullets struck Immelman and his machine, it burst into flames and dropped like a blazing comet. Ball returned to his hangar, got a wreath of flowers, and went into the air again to drop them upon the spot where Immelman had fallen dead. Four days later Ball was killed in a fight with four German planes, but not until he had brought down three of them. But the fighting planes do not get all the thrills in the air. A young English aviator and his observer who were directing artillery fire in September, 1918, showed as great devotion and courage as any ace and lived through as exciting an adventure as ever befell a fighting plane. They were flying over No Man's Land to get the proper range for a battery which was to destroy a bridge of great value to the Huns. Their engine had been running badly and back-firing. They would have returned home had their work been of less importance. Suddenly the pilot smelled burning wood, and looking down, saw the framework near his feet blackened and smoldering. It had caught fire from the backfire of the engine and the exhaust, but was not yet in a decided blaze. He turned off the gas and opened the throttle. Then he made a steep, swift dive, and the powerful rush of the air put the fire out. Then he hesitated, trying to decide whether to "play safe" and go home or whether to continue their work until the battery had secured the exact range. He knew that in a very short time and with a little more observation, their work would be completely successful. So he turned to the observer and asked him what he thought. The observer leaned over and examined the damage near the pilot's feet. It did not look very bad; so he shouted, "Let's carry on." Up they went again and in a short time had shells from the battery falling all about the bridge, which was soon destroyed. Their work was done, and well done. In the excitement they had forgotten the bad engine until they heard it give one last sputter and stop.