How many years of service must be performed to receive the ribbon created by the first United States Secretary of Defense?
Marine Corps Reserve Ribbon:  The ribbon was first created by Secretary of the Navy James Forrestal and recognizes those members of the Marine Corps Reserve who performed ten years of honorable reserve service. James Forrestal: James Vincent Forrestal (February 15, 1892 – May 22, 1949) was the last Cabinet-level United States Secretary of the Navy and the first United States Secretary of Defense.
ten years