Puerto Ricans in the Vietnam War Cambodia from 1959 to April 30, 1975. Puerto Ricans served in different positions throughout the military as commanders, fighter pilots and common foot soldiers. Many of them distinguished themselves in combat and were awarded the highest honors conferred by the military. Five were awarded the Medal of Honor, the highest United States military decoration; five were awarded the Distinguished Service Cross (DSC), the second-highest military decoration of the United States Army; and two received the Navy Cross, the second-highest medal that can be awarded by the U.S. Navy. The Navy Cross is awarded to members of the U.S. Navy or
Efficiency Decoration the Volunteer Officers' Decoration for India and the Colonies. The Volunteer Officers' Decoration for India and the Colonies was superseded in 1899 by the Colonial Auxiliary Forces Officers' Decoration. In the United Kingdom, the Volunteer Officers' Decoration was superseded by the Territorial Decoration in 1908, but it continued to be awarded in a few Crown Dependencies until 1930. The Efficiency Decoration was instituted by Royal Warrant on 23 September 1930 as a long service award for part-time officers of the Territorial Army of the United Kingdom and of the Auxiliary Military Forces of the British Dominions, Colonies and Protectorates and