SOG was founded in 1986 by Spencer and Gloria Frazer, inspired by the Military Assistance Command, Vietnam – Studies and Observations Group (MACV-SOG) and the iconic combat knife used by that elite unit during the Vietnam War.From that beginning—reproducing historic military knives—the company expanded into modern fixed-blade and folding knives, multi-tools, and gear designed for professional use, outdoor pursuits, and everyday carry. SOG is known for blending historical military influence with innovative design and technologies (including unique locking systems and compound-leverage tools), making gear that’s both rugged and practical for real-world tasks.