It was their policy of frightfulness once again. And once again they had made a mistake. The varied expeditions of the Zeppelin airships sent from Germany to bombard Paris, or to cross the Channel and, after dropping bombs on seaside resorts, to wander over the city of London in the hope of spreading destruction there, did little real damage and their net effects, from a military point of view, were practically nil.
The first Zeppelin raid upon England took place on January 19, 1915. The Zeppelins passed over the cities of Yarmouth, Cromer, Sherringham and King's Lynn. On this expedition there were two Zeppelins. They reached the coast of Norfolk about 8.30 in the evening and then steered northwest across the country toward King's Lynn, dropping bombs as they went. In these towns there were no military stations and the damage suffered was very slight. Nine persons were killed, all civilians. This raid was followed by many others, which at first usually wasted their ammunition, dropping their bombs on small country towns or in empty fields.
On the 31st of May an expedition reached London and killed six persons in the east end. The result of this raid was to stir the English to intense indignation. Mobs gathered in the London streets, and persons suspected of being Germans, or with German sympathies, were attacked. Other raids followed, none of them doing serious military damage, but usually killing or wounding innocent non-combatants. The stupid policy of secrecy which they maintained during the first year of the war unfortunately permitted great exaggeration of the real damages which they had suffered.
During the first year, according to Mr. Balfour, in eighteen Zeppelin raids there were only seventy-one civilian adults and eighteen children killed, one hundred and eighty-nine civilian adults and thirty-one children wounded. No soldier or sailor was killed and only seven wounded.
In France similar attacks had been made on Paris and Calais. On the 20th of March two Zeppelins dropped bombs on Paris, but Paris, unlike London, was a fortified city, and the sky soldiers were driven off by the anti-aircraft guns. The French also devised an efficient method of defense. On the appearance of an airship great searchlights flashed into the air and the enemy was made at once a target, not only for the guns of all the forts, but also for airplane attack. In order to attack successfully a Zeppelin it was necessary that an airplane should attain a position above the enemy. For an airplane to rise to such a height time was required, as the airplane rises slowly. The French, therefore, devised a scheme by which two or more airplanes were kept constantly circling at a very great height above the city. Relays were formed which relieved each other at regular intervals. When an airship approached it would therefore be compelled in the first place to pass through the fire of the guns on the great forts, and then would find in the air above airplanes in waiting. The Germans, therefore, practically gave up attacks upon Paris. They were dangerous.
London, practically unarmed, seemed to them an easy mark. But the British Lion was now awake. The English had been taken by surprise. They attempted at first, in an unorganized way, to protect their city, and, though occasionally successful in destroying an airship through the gallantry of some individual hero, they soon found that their defense must be organized, and Admiral Sir Percy Scott was entrusted with the task. Lights were extinguished on the streets and screened on the water front. Illumination for advertising purposes was forbidden; windows were covered, so that London became at night a mass of gloom. The Zeppelins, compelled to fly at a very great height, because of anti-aircraft guns, were blinded. As in Paris airplanes were constantly kept on the alert and searchlights and anti-airship guns placed at every convenient point.
The suggestion was made that the English should undertake reprisals, but the suggestion was strongly opposed on the ground that the British should not be a "party to a line of conduct condemned by every right-thinking man of every civilized nation."
The effect of the English improved defenses was soon obvious, when the German expeditions began to lose airship after airship. Under the new regime, when such an attack was signaled, the whole city immediately received warning and the sky was swept by dozens of searchlights. Safe retreats were ready for those who cared to use them, but ordinarily the whole population rushed out to watch the spectacle. Airplanes would dash at the incoming foe; the searchlights would be switched off and the guns be silent to avoid hindering the aviators. Then would come the attack and Zeppelin after Zeppelin would be seen falling, a great mass of flames, while their companions would hurry back across the Channel. Even there they would not be safe, for many an airship was brought down on English fields, or on the waters of the sea.
The Germans, however, did not confine their policy of frightfulness in the air to the performances of their Zeppelins. Before the Zeppelins had crossed the Channel their airplanes had visited England. On Christmas Day, 1914, an airplane attacked Dover, doing, however, no damage. Other airplanes also visited the British Isles from time to time, dropping bombs, and as the Germans began to lose faith in the efficacy of their Zeppelin fleets they began more and more to substitute airplanes for their airships.
On some of these expeditions much more damage was done than had ever been done by the Zeppelins. The airplane expedition grew serious in the year 1917; between May 23d and June 16th of that year there were five such aerial attacks. The airplanes could not only move with greater speed but with better direction. An attack on May 25th resulted in the killing of seventy-six persons and the injuring of one hundred and seventy-four, the principal victims being women and children. This was at the town of Folkestone on the southeast coast. In this attack there were about sixteen airplanes, and the time of the attack was not more than three minutes. Scarcely any part of Folkestone escaped injury. The attack was methodically organized. Four separate squadrons passed over the city, following each other at short intervals. It was impossible to tell when the attack would end, and people in shelters or cellars were kept waiting for hours without being able to feel certain that the danger had passed.