The U.S. Army awards ribbons to soldiers and officers who have gone beyond the call of duty. There are different kinds of ribbons, each awarded for success and acts of bravery under different circumstances. As of December 2015, there are over 90 military ribbons. The ribbon awarded with the Medal of Honor is the greatest one, with only thousands issued since its introduction in 1861.
To receive the Medal of Honor and the accompanying Medal of Honor ribbon, servicemen must display acts of heroism and gallantry to the point of risking their own lives for the sake of the mission. Furthermore, the act of heroism must occur while engaged in an action against an enemy of the United States or an opposing foreign force or while serving with friendly forces who are engaged in an armed conflict against an opposing armed force. The ribbon has five stars arranged in an M shape.
Members of the Active Army, the Army National Guard or the U.S. Army Reserve who have served for certain periods of time are eligible for the Army Sea Duty ribbon. The exact requirements change depending on the unit. For instance, servicemen in sea duty earn the ribbon when they've served on a Class A or Class B United States Army vessel for two years. The ribbon features vertical stripes in various shades of blue, red and yellow.