The krstaš-barjak (crusader flag) (Serbian: крсташ-барјак; from krst, "cross" and barjak, "flag, banner") refers to various war flags with crosses in the centre, part of Montenegrin tradition,[1] originating from medieval military flags.[2] The krstaš-barjak is known that Serbian Emperor Stefan Dušan (r. 1331–55) adopted the Byzantine cross flag[3] (divellion, which was purple and had a golden cross in the center).[4] According to Serbian epic poetry, during the Ottoman period, hajduks had war flags with crosses (krstaš-barjak) or icons of saints (svetački barjak).[5] The krstaš-barjak is mentioned in poems of the Kosovo Cycle;[6] [7] knight Boško Jugović bears it at the battle of Kosovo (1389).[8] It was used as the general rebel flag during the Serbian Revolution (1804–17), and as the secondary flag of the supreme commander (Karađorđe 1804–13; Miloš Obrenović 1815–17).[3] It was later adopted as a military flag by the Principality of Montenegro (1852–1910) and Kingdom of Montenegro (1910–1918).[9] The Montenegrin war flag used in the Battle of Vučji Do (1876) was red with a white cross pattée in the center and a white border, and tradition holds that it was adopted from the war flag of Kosovo which found itself in Montenegro after surviving knights brought it there.[10] In Peroj (in Croatia), it is held that their ancestors (who migrated from Montenegro) had a war flag used at Kosovo in their possession.[11]
. Stanoje Stanojević. Iz naše prošlosti. 1934. Geca Kon. 83. .