USMC FIGHTING/UTILITY KNIFE Full-size USMC KA-BAR, Straight Edge with leather sheath. The mostfamous fixed blade knife in the World - the KA-BAR - was designed to serve our troops during World War II and is still doing its job, with honors, more than 50 years later. Ka-Bar - FIGHTING/UTILITY KNIFE Blade Type: SERRATED Branch: USMC Packaging: Box Sheath: Hard Plastic Size: Full (7 )