During the spring of 1917 the Germans developed a squadron of large aircraft capable of dropping 660-pound bombs on London -and drop them they did, killing as many as 788 human beings between May of 1917 and May of 1918.
The Giant Goltha Bombers conducted these raids primarily at night and utterly terrified the East End of London. Eventually, German losses escalated and the raids on London raids were called off in favor of Paris and various other French targets. In 1917 this image of a Goltha cockpit appeared in the French press.