History: The OG-107 uniform was introduced in 1952, and, succeeding the M1943 Uniform, it became the standard for use both in the United States and on overseas deployment by the beginning of the Vietnam War. As the Tropical Combat Uniform (jungle fatigues) became more plentiful in South Vietnam, they began to replace the OG-107 Uniform in combat units. A rough time line is that line infantry units from "standard" divisions (not airborne or Special Forces) began receiving jungle fatigues in the spring of 1966 and the OG-107 was slowly relegated to use in rear areas.