May 4—Two Austrian aeroplanes throw incendiary bombs near Mamaligia, in Bessarabia.
May 5—An official French note states that on March 22 French aviators damaged Briey, Conflans, and Metz; that on April 15 French aviators destroyed 150 railroad cars at St. Quentin, twenty-four soldiers being killed; that on April 28 French aviators destroyed a Zeppelin at Friedrichshaven; two Turkish aeroplanes are brought down by shells from the allied fleet at the Dardanelles.
May 7—Three Russian aviators drop bombs on Constantinople.
May 9—British airmen bombard the St. André railway junction near Lille, the canal bridge at Dok, and also Furnes, Herlies, Illies, Marquelles, and La Bassée.
May 10—Zeppelins drop bombs on Westcliffe-on-Sea and Southend, seaside resorts in Essex; slight damage.
May 11—French aviator bombards airship hangar at Maubeuge; German aviator bombards railroad station at Doullens; Germans bring down a British aviator, and British bring down two German aviators.
May 13—A Zeppelin falls in the Gierlesche woods in Belgium, is badly damaged, and is dismantled by the crew, being taken away in sections.
May 17—Two Zeppelins drop bombs on Ramsgate, damaging buildings and wounding three persons; it is reported from Rotterdam that a fight recently occurred in the region of the Yser between a Zeppelin and twenty-seven allied aeroplanes, the Zeppelin being sent crashing to earth with sixty men, while two aeroplanes were wrecked and their pilots killed by machine gun fire from the Zeppelin; British aeroplanes drop proclamations on the town of Gallipoli announcing an approaching bombardment and advising the population to leave.
May 18—London reports that two Zeppelins have been destroyed, one falling within the allied lines at Dunkirk, and the other falling into the sea as the result of shell fire from a French torpedo boat destroyer.
May 20—Squadrons of Austro-German aeroplanes are bombarding Przemysl.