In air fighting forty German machines were brought down by our airplanes, and twenty other hostile airplanes were driven down out of control. In addition, two of the enemy's machines were shot down by anti-aircraft-gun fire. Three hostile observation balloons were also destroyed. Twelve of our airplanes are missing. After dark the incessant bombing carried out by us during the previous twelve hours was continued until dawn. Over twenty-two tons of bombs were dropped on different targets, including the Don and Douai railway stations, two important railway junctions between Mazières and Rheims, and roads leading up to the battlefront in the neighborhood of Estaires. Sir Douglas Haig's report next day stated that low-flying machines reconnoitred the battlefront during the day and dropped over 1,200 bombs on the enemy's troops on roads leading to the front. The numbers of German airplanes destroyed on various days evidence the intensity of the air fighting. Thus, reports of successive days showed these totals: 21, 53, (two days;) 55, 21, 30, 97, (four days.) On May 25 it was stated that many more German airplanes had been added to the total of 1,000 machines recorded as having fallen to earth, or having been sent down out of control since the opening of the drive on March 21. WORK OF BOMBING SQUADRONS Some slight indication of the work of the bombing planes was given in a report of the British Air Ministry, which stated that the number of bombs dropped by British airmen over enemy lines in France, opposite the British front, during March was 23,099 by day and 13,080 by night. The Germans dropped in the area occupied by British troops 517 by day and 1,948 by night. During April the British dropped 6,033 bombs behind the enemy lines along the British front, and the Germans retaliated with 1,346 in the area occupied by British troops. By reuniting practically all their available air force in the sector of attack the enemy won a short-lived superiority. On June 4 there was a good deal of air fighting, that day turning more steadily in favor of the Allies, who by the following day had gained the upper hand over the Germans. A brilliant exploit by French aviators was that briefly recorded in the official report of June 5 to the effect that in the valley of the Savière French bombardment squadrons threw more than seventeen tons of bombs on enemy troop concentrations. Early in the afternoon the airmen were informed that a large number of Germans were assembling in the valley of the Savière. Owing to the configuration of the ground they were sheltered from the fire of artillery and it evident that they intended to reinforce the German move westward into the Forest of Villers-Cotterets. Bombplanes were sent out.