The Fairbairn-Sykes Fighting Knife (also called the Commando Knife; abbreviated to "F-S Knife") is a double-edged fighting knife used mainly by special forces for close-quarters combat. It was first used in WW2 by British Commandos, specificially the Royal Marine Commandos. The knife is designed to inflict both stabbing and slashing wounds, and can be thrown at a distance. It saw extensive use by WWII-era commandos as a stealth weapon. The weapon is still in production today for both for collectors and as a military close combat weapon.