The banner with a white and red cross is confirmed by the kings of Denmark from the fourteenth century. A legend with a significant impact on Danish national historiography is connected by the introduction of the flag to the battle of Lyndanisse in 1219. The extended Nordic cross reflects use as a maritime flag in the 18th century. The flag became popular as a national flag in the early 19th century. His private use was banned in 1834. And again allowed in the regulation of 1854. This flag holds the world record as the oldest permanently used national flag
