Originally posted by fastson
Yes Denmark has one of the oldest flags in the world.
Yup. Warning: Trivia ahead.

"Dannebrog" -- The Danish Flag
The Danish flag, called Dannebrog, is the oldest national flag in the world. Dannebrog translates into "Danish cloth".
During a battle on 15 June 1219, in the small Baltic country of Estonia, the flag is said to have fallen from the sky. When King Waldemar II defeated the Estonians, God let this "Danish cloth" fall to the ground.
The Danish flag has two colors, red and white. The red symbolizes the blood of the martyrs. The white represents purity and Christianity.
The crosses on Scandinavian flags (including the Danish flag) are measured by the width of the color. In the case of Denmark, horizontally there are 12 units of red, 4 units of white, and 21 units of red. Vertically the flag has 12 units of red, 4 units of white and 12 units of red.