KA-BAR
Overview
 
KA-BAR is the contemporary popular name for the combat knife
Combat knife
A combat knife is a fighting knife designed solely for military use and primarily intended for hand-to-hand or close combat fighting.Since the end of trench warfare, most military combat knives have been secondarily designed for utility use in addition to their original role as close-quarter combat...

 first adopted by the United States Marine Corps
United States Marine Corps
The United States Marine Corps is a branch of the United States Armed Forces responsible for providing power projection from the sea, using the mobility of the United States Navy to deliver combined-arms task forces rapidly. It is one of seven uniformed services of the United States...

 in November 1942 as the 1219C2 Combat Knife (later designated the USMC Mark 2 Combat Knife or Knife, Fighting Utility), and subsequently adopted by the United States Navy
United States Navy
The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

 as the U.S. Navy Utility Knife, Mark 2. Additionally, KA-BAR is the trademark and namesake of a related knife manufacturing company, KA-BAR Cutlery Co., Inc.
 
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