Denmark flag

Courtesy of npds02 from postcrossing forum

The national flag of Denmark, Dannebrog, is red with a white Scandinavian cross that extends to the edges of the flag; the vertical part of the cross is shifted to the hoist side. The cross design of the Danish flag was subsequently adopted by the other Nordic countries; Sweden, Norway, Finland, Iceland and the Faroe Islands, as well as the non-Nordic Scottish regions of Shetland and Orkney. During the Danish-Norwegian personal union, Dannebrog ("Danish cloth") was also the flag of Norway and continued to be, with slight modifications, until Norway adopted its current flag in 1821.