Andrew Evans. Iceland. Bradt. 2008 [2007-12-31]. ISBN 9781841622156. Legend states that a red cloth with the white cross simply fell from the sky in the middle of the 13th-century Battle of Valdemar, after which the Danes were victorious. As a badge of divine right, Denmark flew its cross in the other Scandinavian countries it ruled and as each nation gained independence, they incorporated the Christian symbol.
Inge Adriansen, Nationale symboler, Museum Tusculanum Press, 2003, p. 129: "Fra begyndelsen af 1400-tallet kan Dannebrog med sikkerhed dokumenteres som rigsflag, det vil sige statsmagtens og kongens flag" (English: "Dannebrog can with certainty be documented as flag of the realm, that is the flag of the authority of state and of the king, from the beginning of the 1400s")
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政府旗与军旗
军舰旗
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