The six months' period covering February, 1917 to August, 1917, therefore, shows the greatest activity of the various aerial forces since the beginning of the war. On the other hand there has been a greater lack of news and an extreme scarcity of details concerning aerial operations than ever before. However, in spite of this latter condition, it is possible to state that aeroplanes were used more frequently and more extensively than ever before on all fronts, especially the western front. From such reports as are available it appears that the combined English and French aerial forces have become superior, both in number and in efficiency, to those of Germany. The latter, however, have maintained a remarkably high standard.
It is impossible from the reports which are available to give anything like a complete history of aerial warfare during the period from February to August, 1917. Throughout February, 1917, English, French, German, Italian, Russian, and Austrian aeroplanes were extensively employed wherever and whenever conditions permitted. Furnes in Flanders was one of the places frequently bombed by German aeroplanes, while British planes with even greater frequency visited the harbor of Bruges (Zeebrugge) where heavy damage was inflicted on German torpedo boats, docks, and railway lines. Zeebrugge is the German submarine base in Belgium.
On February 10, 1917, aeroplanes were especially active on the western front. German machines unsuccessfully attacked Nancy and Pont St. Vincent. During the same night French air squadrons visited many places in Lorraine and bombed factories at Hauts Fourreaux, La Sarre, Hagodange, Esch, and Mezières-les-Metz. A fire was caused in the neighborhood of the Arnaville station. The aviation ground at Colmar and the fort of Zeebrugge were likewise bombarded.
February 13, 1917, was an especially active day for Russian aeroplanes on the eastern front. They dropped bombs on the Povursk railway station, east of Kovel, and on the depots north of the Povursk station. Bombs were dropped on the station at Rodenrois, east of Riga; on the little town of Lihinhof, in the vicinity of Friedrichstadt; on Valeika, the village of Sviatica, north of Vygonov Lake, south of Kiselin; on Radzivilov, and in the regions south of Brody.
On the same day French and German aviators were busily attacking many places on the western front. A German aviator dropped bombs on Dunkirk. There were no victims and no damage was done. In the vicinity of Pompey, Meurthe-et-Moselle, bombs were dropped. Two civilians were killed and two were wounded. Nancy, too, was visited. During the night French air squadrons dropped projectiles on aviation grounds at Etreillers (Aisne), and Rancourt (Somme), on the railway stations at Athies, Hombleux, Voyenne, Curchy, St. Quentin, and Ham; and also on manufactories east of Tergnier, where several explosions occurred.
Similar activities were reported almost daily, and of course observation flights were made continuously by the aerial forces of all the belligerents.
On February 25, 1917, a French dirigible was shot down by German antiaircraft guns near Weelferdingen, west of Saargemund, in Lorraine. It was completely destroyed and its entire crew of fourteen perished.
On February 28, 1917, the German admiralty made the following announcement:
"In the northern Ægean Sea a German seaplane successfully dropped bombs on a hostile transport. Notwithstanding the fact that it was fired on by artillery and pursued by two enemy aeroplanes, the seaplane returned safely."
This well illustrates the superiority which aeroplanes had achieved when they could, far from their base, successfully attack steamships guarded in every possible way.