George Luger developed a new automatic pistol. The Swiss Army was the first to officially adopt the Luger P.04 pistol. They were followed by the German Navy in in 1904 and the German Army in 1908. Produced by Deutsche Waffen und Munitions, the Luger Parabellum became the world's most widely used military handgun. The Luger fired a 7-round clip of 9mm ammunition. It is estimated that 1.5 million Lugers were produced in Germany during the First World War.