@Arthur_500 I believe they are an officially recognized & supported arm of the Ukrainian military.

They existed long before 2014 as followers of #Bandera in the #Galatian region of #Ukraine, going back to the #Bolsheviks.

Wikipedia agrees.
"The unit was founded in May 2014 as a volunteer paramilitary militia under the command of Andriy Biletsky to fight pro-Russian forces in the Donbas War, and was formally incorporated into the National Guard on 11 November 2014."
https://en.m.wikipedia.org/wiki/Azov_Regiment