Invented by general Kijiro Nambu, during the reign of the Taisho emperor, the Taisho 14 visually resembles the Luger Parabellum, though it's inner workings are quite different. The Taisho 14 was invented around 1925 in order to replace a previous pistol by general Kijiro Nambu and was used by the Japanese Army as their standard sidearm during Wold War II, as well as the previous Southeast Asian campaigns. Unfortunately, the ammunition used by the Taisho is arguably inferior to that used by the sidearms of the other major powers at the time of World War II.
Taisho 14 on Wikipedia