May 31—Zeppelins drop ninety incendiary bombs on London in a night raid; four civilians are killed and several others wounded; numerous fires are started, but none prove serious; Berlin announces that the attack is a reprisal for the aerial attack on Ludwigshafen; Italian dirigible makes a raid on the Austrian naval base of Pola, damaging the railroad station and arsenal.
June 2—Germans shoot down a British aeroplane at Bixschoote.
June 3—Twenty-nine French aeroplanes aim 178 shells and several thousand darts at the headquarters of the German Crown Prince, killing several soldiers.
June 4—Zeppelins drop bombs on the east and southeast coasts of England; little damage is done and casualties are few.
June 5—A Taube drops bombs on Calais, killing one person and doing slight property damage.
June 6—Ten Zeppelins of a new type are reported from Copenhagen to have been completed, these machines having greater speed than the old ships; they are stated to be fitted with appliances for dropping poisonous gas bombs; German aeroplanes drop bombs on Calais and on the aviation grounds at Lunéville; a Zeppelin drops bombs on the east coast of England, five persons being killed and forty injured.
June 7—Sub-Lieutenant Warneford of the British Flying Corps fights a duel with a Zeppelin at a height of 6,000 feet; with incendiary bombs he explodes the airship, which falls near Ghent, the twenty-eight men on board being killed; Warneford returns safely to the British lines; Italian dirigible bombards Pola.
June 8—King George sends a warmly congratulatory telegram to Sub-Lieutenant Warneford and confers upon him the Victoria Cross; Austrian aeroplane bombards Venice; Austrian aeroplane destroys an Italian airship.
June 12—Austrian aeroplanes drop bombs on the breakwater of Bari, on Polignano, where a woman is killed, and on Monopoli.
June 13—Italian airship seriously damages the arsenal at the naval station of Pola.