a. The Citation Star was established as a result of an Act of Congress on July 9, 1918 (65th Congress, Sess II, Chapter 143, page 873) and was promulgated in War Department Bulletin No. 43 dated 1918. It was retroactive to include those cited for gallantry in action in previous campaigns back to the Spanish-American War. Per letter from General Jervey, Office of the Chief of Staff, dated February 26, 1926, is quoted in part: The Secretary of War directs as follows - The following is the amended version of paragraph 187 of Army Regulation: “No more than one Medal of Honor or one Distinguished Service Cross or one Distinguished Service Medal shall be issued to any one person, but for each succeeding or act sufficient to justify the award of a Medal of Honor or Distinguished Service Cross or Distinguished Service Medal, respectively, a bronze oak leaf cluster, shall be issued in lieu thereof; and for each citation of an officer or enlisted man for gallantry in action, published in orders from headquarters of a force commanded by a general officer, not warranting the issue of a Medal of Honor, Distinguished Service Cross or Distinguished Service Medal, he shall wear a silver star, 3/16 inch in diameter, as prescribed in Uniform Regulations.” Army Regulation 600-40, paragraph 48, September 27, 1921, specified that the Citation Star would be worn above the clasp, on the ribbon of the service medal for the campaign for service in which the citations were given.