Another fine day on March 11, 1918, enabled the British aeroplanes to continue their activity. Visibility, however, was again poor and prevented work with the artillery from achieving much success. Over 500 bombs were dropped, the chief target being the large sidings and ammunition depots at Aulnoye, southeast of Maubeuge, and ammunition depots south of Valenciennes, southeast of Cambrai, and south of Douai. As the result of air fighting ten German machines were brought down and seven others were driven down out of control. In addition a German observation balloon was attacked, and brought down in flames. Two British machines were lost. After dark most of the British night bombing machines were again prevented from leaving the ground by mist, but on the southern portion of the front, where the night was clear, 200 bombs were dropped on a German ammunition dump and railway sidings northeast of St. Quentin. The Germans also dropped a few bombs during the night, but lost a four-seater machine, which landed in the lines. The occupants were taken prisoners.

On March 12, 1918, another daylight raid into Germany, making the third within four days, was carried out by British aeroplanes. On this occasion the factories and station and the barracks at Coblenz, at the junction of the Rhine and the Moselle, 135 miles north-northeast of Nancy and about fifty miles southeast of Cologne, were attacked. Over a ton of bombs were dropped, and bursts were seen on all the objectives, causing two fires. A hit obtained upon a building in the southwest corner of the town created a very large explosion. A few German machines were encountered, but all the British machines returned safely.

During the night of March 11-12, 1918, in addition to the raids already reported, over three tons of bombs were dropped on Bruges docks.

On March 12, 1918, a distinct improvement in visibility enabled more work to be done in conjunction with the artillery than had been possible during the last few days. Many reconnoissances also were carried out and photographs were taken. Bombing was continued with even greater vigor than on previous days. Over thirteen and a half tons of bombs were dropped on various targets, which included the railway sidings at Mons and at Bavai, midway between Valenciennes and Maubeuge, on large ammunition depots northeast of St. Quentin, and south of Douai, and on billets east of Lens. In the course of the fighting, which was continuous throughout the day, fourteen German machines were brought down, and eight others were driven down out of control. One hostile observation balloon was also destroyed. Six British aeroplanes were bagged by the Germans.

During the night of March 12-13, 1918, seven tons of bombs were dropped on German billets between Lille and Cambrai. On the afternoon of March 13, 1918, British squadrons attacked the munition works and barracks at Freiburg, in Germany. All machines reached their objectives, and nearly a ton of bombs was dropped. They were seen to burst on the railway station and round the power station. Just after the British pilots had released their bombs their formation was attacked by a large number of German machines. A fierce fight ensued, which lasted until all the German machines had been forced to withdraw. Three of the British machines failed to return.

On March 16, 1918, further military objectives in Germany were attacked by British aeroplanes. Fourteen heavy and ten lighter bombs were dropped on the barracks, munition factories, and railway station of Zweibrücken, in the Rhine Palatinate. Bursts were seen on the barracks and all round the railway station. The formation was attacked by German scouts and engaged by antiaircraft guns, but all machines returned.

Still another raid into Germany was made on the next day, March 17, 1918. The barracks and railway station at Kaiserslautern, likewise in the Rhine Palatinate, were attacked with good results. Direct hits were observed on the railway station and a large fire was caused. The formation was attacked by a large number of German machines, which were driven off. All the British machines returned.

During that day the German billets, which had been bombed continually for the last twenty-four hours, were again heavily attacked. A total of thirteen tons of bombs were dropped, the objectives including two German aerodromes and three large ammunition dumps, in addition to billets. At one of the aerodromes a hangar was completely burned, and a Gotha machine which was in the act of rising from the ground was seen to crash.

The fighting was intense during the morning, but became slightly less vigorous during the afternoon. Sixteen German machines were brought down and seven others were driven down out of control. Six British machines were reported missing. After dark the German rest billets were again attacked, bombs being dropped until just after midnight, when a thick mist developed.

The atmosphere was again clear on March 18, 1918, and favored the cooperation of the aeroplanes and artillery. Several long-distance reconnoissances were successfully completed, and many photographs were taken. Nine tons of bombs were dropped on German rest billets and ammunition dumps and also on Busigny railway station and two German aerodromes. Fighting in the air was exceedingly intense, encounters taking place between large formations of British and German machines. Nineteen German aeroplanes were brought down and nine driven down out of control. Twelve British machines failed to return.