The Navy "E" Ribbon or Battle Efficiency Ribbon was authorized on March 31, 1976, by Secretary of the Navy J. William Middendorf as a unit award for battle efficiency competition. The service ribbon replaced the "E" patch previously sewn on the right sleeve of the enlisted naval uniform for rates/pay grades E-1 through E-6.

The Meritorious Unit Commendation is a mid-level unit award of the United States Armed Forces. The U.S. Army awards units the Army MUC for exceptionally meritorious conduct in performance of outstanding achievement or service in combat or non-combat, the U.S. Navy and U.S. Marine Corps award units the Navy MUC for valorous or meritorious achievement or service in combat or non-combat, and the U.S. Coast Guard awards units the Coast Guard MUC for valorous or meritorious achievement or service not involving combat.