A combat knife is a fighting knife designed for military use and primarily intended for hand-to-hand or close combat fighting.
Soviet NR 43 Combat Knife
"KA-BAR" USMC Combat Knife, the standard U.S. Marine Corps combat knife during and after World War II
A modern KM2000 of the German Army
Glock Feldmesser FM 78 and its sheath
Ka-Bar is the combat knife adopted in 1942 by the United States Marine Corps as the U.S. Marine Corps utility knife, Mark 2.
Combat knife
…late 1942, the U.S. Marine Corps adopted the 1219C2, later designated the "USMC Mark 2 Combat Knife," but better known in popular terminology as the KA-BAR. The KA-BAR differed from World War I-era U.S. combat knives in that it was designed as a dual-purpose item, adapted for both combat and as a utility…
USMC Ka-Bar knife with leather sheath
A traditional Ka-Bar knife and leather sheath of unknown age
In USMC service in Iraq, 2005