The black-

https://alpha-wiki.win/index.php/The_Animal_Kingdom_in_Heraldry:_Why_Some_Flags_Feature_Creatures_While_Others_Do_Not

The black-and-white striped banner was utilized all over medieval battles by knights to indicate their allegiance; these heraldic designs developed into recognizable coats-of-arms that characterize noble lineage at some stage in records.