U.S. military personnel having received these awards have participated within these areas of combat/conflict during the time these awards were given to U.S. service members. Such awards have since been discontinued or are no longer applicable in terms of receiving these commendations. Certain decorations remain inactive at this time (e.g. National Defense Service Medal) but may be reactivated at a later date in the future.
Discontinued or proposed The following decorations were designed for issuance with an approved medal, but were either never officially approved for presentation or were discontinued before a first award could be made.
Single service awards Single service awards were official military decorations created as one time awards to recognize a single event. The first such single service award was issued during the Spanish–American War by the
Revenue Cutter Service to honor the actions of the vessel
USRC Hudson during the
Battle of Cárdenas. The last single service award was issued in 1960 when Congress authorized the awarding of the
Four Chaplains' Medal recognizing the
Four Chaplains who died together during World War II. There have been no single service awards issued since by the U.S. military, mainly due to the decline and complications of awarding commemorative service medals.
Unofficial decorations Unofficial decorations are those military awards created and issued by local commanders. In most cases, unofficial awards were designed to commemorate a specific battle or engagement of a commander's unit. The most well known unofficial awards were issued during the American Civil War. After the Civil War, stricter military regulations prohibited local commanders from issuing awards and the practice had fallen into disuse by the 20th century. Even so, the Department of Defense has stated that large numbers of unofficial medals were privately issued to members of the Armed Forces of the United States for many years after the
Civil War, mostly to commemorate specific battles, events, or as private veteran memorabilia. One of the more well known is the
Walter Reed Medal (recognized today as a
Congressional Gold Medal), awarded for exploratory scientific achievement in the field of
malaria treatment. While presented as a gold medallion, members of the military were reported to wear a red ribbon on their uniforms to denote the decoration. ==Foreign and international awards==