Wikipedia
Bunchuk
A Bunchuk ( Ukrainian: Бунчук; Polish: Buńczuk) is a piece of horse or yak tail hair attached to the top of a pole, which is decorated with a trident, a ball or a crescent.
Bunchuk was used instead of a flag or along with it by nomadic peoples of Eurasia like Scythians, Sarmatians, Huns, Avars, Cumans and others. During the 13th - 18th centuries it served as a symbol of power of Mongolian and Crimean khans, Turkish sultans and his ministers, Polish hetmans, and atamans of Ukrainian ( Zaporozhian, Danubian, Kuban) and Don Cossaks. The tradition of using Bunchuk is preserved in the Army of the Polish Republic.
The Mongol equivalent to the bunchuk is called a tug or sulde, known as tuğ in the Turkic languages.