US Distinguished Flying Cross in Case. The Distinguished Flying Cross (DFC) is a military decoration of the United States Armed Forces. The medal was established on 2 July 1926, and is awarded to those who, after 6 April 1917, have distinguished themselves by single acts of heroism or extraordinary achievement while participating in aerial flight. The set is not visible maker marked or dated. The medal comes in its original box, complete with small ribbon bar and pin. Nice original set in very good condition!