Which European country's flag is known as the Dannebrog?

Which European country's flag is known as the Dannebrog? Denmark. The Dannebrog is Denmark's red flag bearing a white Nordic cross, with the vertical arm shifted toward the hoist. The name is Danish and is commonly translated as “Danish cloth” or “red cloth.”

A famous Danish tradition says the flag fell from the sky during the Battle of Lindanise near Tallinn on 15 June 1219, helping King Valdemar II's forces win. That story was recorded centuries later, so it is a national legend rather than a contemporary eyewitness account. A white-on-red cross banner is nevertheless documented in Danish royal use by the 14th century.

The flag became increasingly associated with Denmark during the 16th century and was regulated for maritime use in 1748. Private citizens were briefly prohibited from displaying it in the 19th century, but that restriction was lifted in 1854. It is often described as the world's oldest continuously used national flag, though the claim depends on how continuous use is defined.