Our first naval "ace," Lieutenant David S. Ingalls, was attached to this Northern Bombing Group, being first assigned to Royal Air Force Squadron No. 213. His spectacular performances began on August 11, 1918, when, in company with a British officer, he shot down a two-seater machine in a running flight over the German lines. The night of the 13th, flying over the German airdrome at Varsenaere, and dropping to a point where his plane nearly touched the ground, he sprayed 450 rounds from his machine-gun into the wondering Teutons, who were making desperate efforts to get him with their anti-aircraft guns. Swinging in a wide circle, he again swooped down on the hangars and let loose four bombs in the midst of the camp, putting out searchlights, scattering Germans and mussing up things generally. At the Uytkerke airdrome he repeated the stunt he worked at Varsenaere, firing 400 rounds into the German hangars, and dropping bombs upon the Fokkers grouped on the field below. On this raid, which occurred September 15, Ingalls led a formation of five in a wing of twenty biplanes. Returning from Uytkerke, he sighted an enemy two-seater Rumpler going west from Ostend. With Lieutenant H. C. Smith, of the British Air Force, Ingalls turned out of formation, swung in over the shore, and attacked. The Rumpler turned and dived toward Ostend, the Camels following. Firing 400 rounds from ranges of fifty to 200 yards, they chased the enemy plane to the Ostend piers, when the Rumpler went down out of control, burst into flames and crashed just off the beach. Three days later Ingalls made one of the most spectacular flights on record. In company with two English pilots, he sighted a kite balloon at 3,500 feet elevation near La Barriere. Crossing the coast line, they attacked. The German kite reeled under the rapid fire, and as it fell, its two observers opened up their white parachutes and jumped. Ingalls gave the balloon another spraying with bullets and it burst into flames. Falling, the blazing balloon landed on a hangar. There was an explosion, followed by a fire that destroyed the entire station. The flames were visible as far as Nieuport. On September 22, in company with four other machines, Ingalls flew all over Flanders, committing depredations on German hangars, and ammunition trains. Four bombs were dropped on the ammunition dump at Handezeame, blowing up a string of wagons loaded with shells. Flying over Wercken, bombs were landed on a hut filled with explosives, setting it on fire. Swinging around over the railway station at Thourout, where the Germans had an enormous supply dump, two more hits were made. On the way back, his fourth trip for the day, he bombed a horse transport, and he and his companions by bombs and machine-gun fire killed or wounded some twenty-five Germans and thirty-five horses.