The Army delayed their adoption, as Mauser requested time to develop a new pistol of their own, which was finished in 1907. Following a change in caliber from 7.65×21mm Parabellum to 9×19mm Parabellum, the Luger was adopted by the Imperial German Navy as the Selbstlade-Pistole Modell 1904, and later simply the Pistole 1904. In 1901, testing of the Luger commenced, alongside an improved version of the C96, in which the Luger was found to be both lighter and more reliable. In 1898, Germany adopted a total of 145 C96 pistols, but found that it jammed too often to be effective. The Luger remained in Swiss service until 1949, when it was replaced by the SIG P210.
20 examples of the Borchardt-Luger were sent to Switzerland in 1899, and after a revision to reduce its weight, was adopted the following year as the Ordonnazpistole 1900. Georg Luger, working for the German company Deutsche Waffen- und Munitionsfabriken, provided the Borchardt-Luger design, which during Swiss military trials, was found to be more accurate and reliable than competing designs such as the Mannlicher M1901 and Mauser C96. In 1897, after the success of the Borchardt C-93, the first semi-automatic pistol, the Swiss military began to look for a semi-automatic pistol to replace their issued pistol, the Ordonnanzrevolver 1872. The name Parabellum, which also featured in DWM's telegraphic address, comes from the Latin phrase, Si vis pacem, para bellum "If you wish for peace, prepare for war."
The Luger is well known for its wide use by Germany during World War I and World War II, along with the interwar Weimar Republic and the postwar East German Volkspolizei. The Model 08 was eventually succeeded by the Walther P38. In the German Army service, it was adopted in a slightly modified form as the Pistole Modell 1908 (Pistole 08) in caliber 9×19mm Parabellum. It was widely used in other countries as a military service pistol and by police forces. The Luger was the standard service pistol of Switzerland, Portugal, the Netherlands, Brazil, Bolivia, and Bulgaria. The Luger was officially adopted by the Swiss military in 1900, the Imperial German Navy in 1906 and the German Army in 1908. It was followed by the "Marinepistole 1904" for the Imperial German Navy. The first production model was known as the Modell 1900 Parabellum. It was meant to be an improvement of the Borchardt C-93 pistol, and was initially produced as the Parabellum Automatic Pistol, Borchardt-Luger System by the German arms manufacturer Deutsche Waffen und Munitionsfabriken (DWM). The design was first patented by Georg Luger. The Luger was produced in several models and by several nations from 1898 to 1949.
The Pistole Parabellum-or Parabellum-Pistole ( Pistol Parabellum), commonly known as just Luger or Luger P08 is a toggle-locked recoil-operated semi-automatic pistol.