The BC-41 (British Commando) Model 41 Fighting Knife (manufactured starting in 1940-1941), owed it's origins to the Trench Knives of World War I . The blade was single edged and ranged from 8 to 12-inches long. The blade handle incorporated a "D"-Grip molded into a pair of "Dusters", or more commonly referred to as Brass Knuckles. These brass handles were often sharpened at their apex, to inflict slashing and deep trauma injuries. The BC-41 was carried in a leather scabbard, and was the predominate fighting Knife of The British Commando Regiments, until they were replaced by The Fairbairn-Sykes Fighting Blade.