The German Solothurn S-18/100 was a early World War II Anti-Tank Rifle (also known as a ''Cannon'' by German Forces). A similar Swiss version was also produced and deployed during the same Period. Using a modified 105mm Round (similar to a German Anti-Aircraft shell used then), The S-10 had a Ammunition Clip which held (10) such Shells. The ''Cannon'' had a 600-yard effective range and ould pierce up to 5.5-inches of Armor Plate. The Weapon which was operated by two soldiers (one to fire and the other to assist in carrying and placing the 25-pound Gun), saw only (20) Production Models before Soviet Forces occupied Romania (the site of the primary Factory which produced The S-18).