Asiatic Pacific Campaign Medal is a service decoration of the Second World War which was awarded to any member of the United States military who served in the Pacific Theater from 1941 to 1945. There were 21 Army and 48 Navy/Marine official campaigns of the Pacific Theater, denoted on the service ribbon by campaign stars; some construction battalion units issued the medal with award numerals. The arrowhead device is authorized for those campaigns which involved amphibious assaults. The Fleet Marine Force combat operation insignia is also authorized for certain sailors. The flag colors of Japan and the United States are visible in the ribbon.