The Department of Defense has established six operation periods to date that serve as criteria: Enduring Freedom, September 11, 2001-to be determined (TBD); Iraqi Freedom, March 19, 2003-August 31, 2010; Nomad Shadow, November 5, 2007-TBD; New Dawn, September 1, 2010-December 31, 2011; Inherent Resolve, June 15, 2014-TBD; and Freedom's Sentinel, January 1, 2015-TBD.
Prior to April 30, 2005, the medal was awarded for service within Iraq and Afghanistan, but it has been discontinued for those countries and replaced with the
Iraq Campaign medal and
Afghanistan Campaign medal. Recipients can exchange the Expeditionary medal or retain the original, but no one can earn more than one medal for the same service period.
Designed by John Sproston of the Army's Institute of Heraldry, the War on Terrorism Expeditionary medal is a bronze disc with a shield adapted from the Great Seal of the United States superimposed on two crossed swords enclosed in a laurel wreath. An eagle with outspread wings is surmounted on the shield; it clutches a serpent in its talons. The reverse repeats the swords, eagle, and serpent with "War on Terrorism Expeditionary Medal" inscribed around them.
The ribbon is scarlet, white, and blue to represent the U.S., light blue for worldwide cooperation against terrorism, and gold for excellence. Recipients who participate in more than one designated service period receive a bronze star for each; a silver star replaces five bronze stars.