[{WikipediaArticle oldid='237316934'}]

%%information
%%(font-size: 80%;)
!!!License Information of Images on page
||Image Description||Credit||Artist||License Name||File
| The Byzantine imperial ensign (βασιλικόν φλάμουλον), as depicted in the 14th-century Castilian Book of All Kingdoms , and described in the Treatise on Offices by the mid 14th-century Byzantine writer Pseudo-Kodinos as being hoisted on imperial naval vessels. It features the tetragrammic cross with the four "B"s that is attested in contemporary portolans, on coins and reliefs.| Eigenes Werk| Cplakidas| [{Image src='https://www.austria-forum.org/cc/images/slim/by-sa.png' alt='CC BY-SA 3.0' align='center' link='https://www.austria-forum.org/cc/by-sa-30.html' target='_blank'}]| Datei:Byzantine imperial flag, 14th century.svg
| Mittelalterliche Karte von Konstantinopel.| https://sakipsabancimuzesi.org/tr/object/istanbul-haritasi| Cristoforo Buondelmonti| [{Image src='https://www.austria-forum.org/cc/images/slim/publicdomain.png' alt='Public domain' align='center' link='https://www.austria-forum.org/cc/public-domain-10.html' target='_blank'}]| Datei:Constantinople mediaeval map.jpg
| According to Rıza Nur, sultan Selim I (1512-20) had a white personal flag, while the Ottoman Army flag was red ( kızıl bayrak ). During Süleyman I's reign (1520-66) the janissaries had a white flag while the timariot cavalry had a red flag. It was used as the Ottoman civic and merchant flag from 1793 to 1923.| According to Jane Hathaway ( 1 February 2012 ) A Tale of Two Factions: Myth, Memory, and Identity in Ottoman Egypt and Yemen 1 , SUNY Press, ISBN 978-0-7914-8610-8 , pages 99–| DarkEvil (former upload), TRAJAN 117 (current upload)| [{Image src='https://www.austria-forum.org/cc/images/slim/publicdomain.png' alt='Public domain' align='center' link='https://www.austria-forum.org/cc/public-domain-10.html' target='_blank'}]| Datei:Ottoman red flag.svg
%%
%%