Stiletto through the end of the 19th century, particularly in France, Corsica, and Italy. While still used as a weapon of surprise and assassination, the use of stiletto in preference to the dagger in close combat confrontations between adversaries became widespread throughout Italy, Sardinia, and Corsica. The continued popularity of the stiletto in the Kingdom of Sicily resulted in the development of the "scherma di stiletto siciliano" (Sicilian school of stiletto fighting). A person skilled in the use of a stiletto would thrust the knife deep into the victim, then twist the blade sharply in various directions before retracting it, causing
Stiletto fallen or severely wounded heavily armored opponent. The needle-like blade could, if used with sufficient force, penetrate most mail or find its way through gaps in a knight's plate armor, and was narrow enough to pass through the eye slits of the helmeted knight. A severely wounded opponent who was not expected to survive would be given a "mercy strike" (French "coup de grâce"), hence the name "miséricorde". Later, the Gunner's Stiletto became a tool for clearing cannon-fuse touch holes; used in the manner of an automotive oil dipstick, they were often inscribed with marks indicating levels of powder charges