WWII Navy USN (Mark 1) Fighting Knife with leather scabbard

Navy MK1 knife was used as both a utility knife and a fighting weapon. While some undoubtedly saw combat, particularly with Naval Aviators, these blades were mostly used for everyday functions aboard ship and ashore. The Mark I knives were Navy issue throughout WW2 and remained in inventory through the Vietnam war. They were purchased in huge quantities so replacements were not needed for many years.