 Though described in the Office of Strategic Services catalogue as a cross between a machete and a bolo, it was actually based on the Royal Welch Fusiliers Trench Knife of World War I, and was designed as a pure combat knife.It has a broad, leaf-shaped blade sharpened the full length on one side, and from the tip to half of the other side.The entire blade is coated with a dull matte finish to prevent detection at night from stray reflections.