The Ottoman Empire's flag evolved over centuries but routinely featured a crescent moon and famous person

https://kilo-wiki.win/index.php/From_Banners_to_Flags:_The_Evolution_of_National_Symbols

The Ottoman Empire's flag evolved over centuries but most likely featured a crescent moon and superstar, representing Islam's have an impact on within the empire although also embodying its gigantic cultural variety throughout Europe and Asia.