The Mauser Tankgewehr M1918 is an Imperial German anti-tank rifle, chambered in the 13.2mm TuF cartridge. Devised between 1916 and 1918, the weapon did not see mass production or widespread use until mid-1918. It was designed as a counter to the British and French use of tanks like the Mark IV/V and Renault FT, and was the only anti-tank rifle to see service during the war. The 13.2mm round was capable of penetrating 22mm of armor plating, nearly double that of the Mark IV's maximum of 12mm.