Fighting knife the Kukri, a broad-bladed, curved general-purpose cutting tool and weapon with Indian origins. In other countries the machete or Filipino Bolo were often used as fighting knives by indigenous military or paramilitary forces. Colonial powers that encountered these general-purpose weapons used as fighting knives during a military campaign occasionally adopted them in turn for use by their own military forces, as exemplified by the U.S. Army's Model 1910/17 "Bolo" brush-clearing knife, which would be later pressed into service as a fighting knife in both World Wars. In World War I, military use of the fighting knife saw the introduction of
Yakutian knife and is basically a convex edge (meaning it rounds down to the edge, rather than having a straight bevel). The blade is traditionally forged from locally sourced iron ore smelted by Yakutian blacksmiths. The knife handle is traditionally made from birch burl and is thick and egg-shaped in cross-section. It fits the hand and can also be used wearing gloves. The birch also protects the hand from the cold effects of the knife steel in extreme cold, a common condition in Siberia during winter months. The knife sheath is traditionally made from cow tail hide. Yakutian knife The Yakutian knife