I was watching an aeroplane flying very high in our direction and, as our anti-aircraft shells were bursting beneath it, the little white puffs of smoke of the shells' burst indicated to us that the aeroplane was a Hun machine. Nothing seemed to daunt the aviator and as he hovered over the observation balloon on my right I heard his machine gun firing. A few bombs were dropped and the balloon took fire. The observation officer in the meantime had jumped out of his basket. He began to fall through space until his parachute opened. Then we witnessed a thrilling race as the burning balloon and the officer in his parachute began to descend to the ground, pursued by the Hun aviator who was using his machine gun on the unfortunate observation officer. Luckily the observation officer got safely to the ground. The next target of this daring Hun aviator was the observation balloon in front of where we were standing. The observation officer immediately jumped out of his basket and got safely down to the ground. The Hun aviator, however, destroyed this balloon and then retired back to his lines, evidently having used up all of his bombs. He came back an hour later and destroyed a third balloon, but this time his daring was nipped in the bud as he was brought down by one of our anti-aircraft shells somewhere near one of our rear support lines. One of his hands had been shattered so that he was unable to manipulate his levers. The boys had no sooner taken him prisoner and got him clear of his machine than the German artillery opened up and with a shell blew his aeroplane to pieces. It must be understood that our aeroplanes cannot be everywhere at the same time. They had evidently gone on a mission to some other locality and the Huns had probably been aware of this fact. Hence the audacity of this aviator. Later the same evening I was walking along the Villers-au-Bois and Carency Road when I heard the drone of an aeroplane behind me. I turned round and saw an aeroplane flying very fast and low. I was at that time in the centre of the road. On both sides were tents occupied by the men of an artillery battery who were also out at rest. Suddenly I heard three loud reports and knew at once the Hun was dropping bombs. As I imprudently glanced up in the air I could see the aviator leaning over the side of his plane and the Maltese Cross on the wings, as he turned his machine gun upon the tents around me. The observation officer was firing what we called a "chaser" bullet. These bullets at dusk or night show a reddish streak as they travel through the air, giving the aviator an idea of the direction of his fire. There is usually one chaser bullet to every five cartridges. However, this aviator was soon brought down by our anti-aircraft picket, which was waiting for him. As he was flying low they had no trouble in bringing his machine down.