On June 16, 1219, the Danes were in big trouble. They had gone crusading in pagan Estonia and found the pagans more than a match. As the Danish line was about to collapse, a bishop cast his arms skyward pleading for salvation. The clouds parted and out of the light fluttered a red banner emblazoned with a white cross. The Danish King Valdemar II seized the banner and held it aloft for his men to see. God was with the Danes! They roared and pitched into the Estonians with new found strength turning the tables and winning a dramatic victory. Denmark won the battle and gained a new national flag. At least that's the story.
The real story though is still pretty interesting providing a window into Medieval culture and demonstrating how symbols, ideas and legends influence future generations even down to today.