The Silver Star Medal (SSM) is the United States Armed Forces' third-highest military decoration for valor in combat. The Silver Star Medal is awarded primarily to members of the United States Armed Forces for gallantry in action against an enemy of the United States. History The Silver Star Medal (SSM) is the successor award to the "Citation Star" ( silver star) which was established by an Act of Congress on July 9, 1918, during World War I. On July 19, 1932, the Secretary of War approved the conversion of the "Citation Star" to the SSM with the original "Citation Star" incorporated into the center of the medal. Authorization for the Silver Star Medal was placed into law by an Act of Congress for the U.S. Navy on August 7, 1942, and an Act of Congress for the U.S. Army on December 15, 1942. The current statutory authorization for the medal is Title 10 of the United States Code, for the U.S. Army, for the U.S. Navy and U.S. Marine Corps, and for the U.S. Air Force and U.S. Space Force. The U.S. Army awards the medal as the "Silver Star". The U.S. Navy, Marine Corps, Air Force, Space Force, and Coast Guard award the medal as the "Silver Star Medal". Since 21 December 2016, the Department of Defense (DoD) refers to the decoration as the "Silver Star Medal". Award criteria The Silver Star Medal is awarded for gallantry, so long as the action does not justify the award of one of the next higher valor awards: the Distinguished Service Cross, the Navy Cross, the Air Force Cross, or the Coast Guard Cross. The gallantry displayed must have taken place while in action against an enemy of the United States, while engaged in military operations involving conflict with an opposing foreign force, or while serving with friendly foreign forces engaged in an armed conflict against an opposing armed force in which the United States is not a belligerent party. The Silver Star Medal is awarded for singular acts of valor or heroism over a brief period, such as one or two days of a battle. Air Force pilots and combat systems officers and Navy/Marine Corps naval aviators and flight officers flying fighter aircraft, are often considered eligible to receive the Silver Star upon becoming an ace (i.e., having five or more confirmed aerial kills), which entails the pilot and, in multi-seat