The Overrun Countries series was a series of thirteen commemorative postage stamps, each of five-cent denomination, issued by the United States over a fifteen-month period in 1943 and 1944 as a tribute to thirteen nations overrun, occupied, and/or annexed by the Axis Powers during or shortly before World War II.[1]
The stamps with flags of European countries were released at intervals from June to December 1943, while the Korea flag stamp was released in November 1944.[3] The dates on which these stamps were issued are: Poland, 22 June 1943; Czechoslovakia, 12 July 1943; Norway, 27 July 1943; Luxembourg, 10 August 1943; the Netherlands, 23 August 1943; Belgium, 14 September 1943; France, 28 September 1943; Greece, 12 October 1943; Yugoslavia, 26 October 1943; Albania, 9 November 1943; Austria, 23 November 1943; Denmark, 7 December 1943; and Korea,
2 November 1944.[4]