Keywords: Flag of the Holy Roman Empire (1200-1350).svg Eigentliche Flagge des Heiligen Römischen Reiches zwischen 1200 and 1350 Flag with a white cross on a red field supposed to represent an early form of the Reichssturmfahne or Imperial War Flag used alongside the Imperial Banner It was smaller than the imperial banner carried before the emperor or his appointed commander in battle It likely developed in the 12th century during the crusades and was in use as Imperial War Flag during the 13th and early 14th centuries frequently with a Schwenkel La bandiera del Sacro Romano Impero dal 1200 al 1350 own simple geometric design ineligible for copyright 2006 User Madden Other versions <gallery> File Bandera de Blanes svg File Flag of John the Baptist svg File Savoie flag svg File War flag of the Holy Roman Empire 1200-1350 svg </gallery> White cross in red field Red flags with white one-cross Red and white flags Flags of the Holy Roman Empire Flags with one cross center-parted bicolor |