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21st Public Order Protection Brigade
21st Public Order Protection Brigade
21-ша окрема бригада охорони громадського порядку (Ukrainian)
	Brigade Insignia
Founded	1992
Country	Ukraine
Allegiance	Ministry of Internal Affairs
Branch	National Guard of Ukraine
Type	Brigade
Role	Law enforcement, protection of the Ukrainian territorial integrity
Part of	National Guard of Ukraine
Garrison/HQ	Kropyvnytskyi and Kryvyi Rih
Nickname(s)	Petro Kalnyshevsky Brigade
Patron	Petro Kalnyshevsky
Engagements	Russo-Ukrainian war War in Donbas Battles of Sievierodonetsk; Battle of Marinka; ; Russian invasion of Ukraine Siege of Mariupol; ;
Commanders
Current; commander	Colonel Oleksandr Gennadiyovych Alenin
Notable; commanders	Colonel Oleksandr Vitaliyovych Radievskyi †
Insignia
Former Insignia

The 21st Separate Public Order Protection Brigade is a law enforcement brigade of the National Guard of Ukraine tasked with protection of the law and order as well as the territorial integrity of Ukraine. It was established in 1992 on the basis of the 25th Separate Special Motorized Militia Battalion as the 6th Regiment. The brigade's main headquarters is in Kryvyi Rih but some parts of it are garrisoned at Kropyvnytskyi.

History

On 2 January 1992, it was established on the basis of the 25th Separate Special Motorized Militia Battalion as the 6th Regiment of the National Guard of Ukraine being transferred to the Internal Troops of Ukraine on 26 January 1995, becoming the 21st Separate Special Motorized Police Brigade.

In 2014, the brigade was renamed as the 21st Public Order Protection Brigade and became part of the National Guard of Ukraine.^[1]

With the beginning of the War in Donbass, the regiment destroyed multiple separatist outposts during the liberation of Mykolaivka, Semenivka, and Sloviansk. On 23 July 2014, the brigade took part in the Battles of Sievierodonetsk (2014) during which the regiment's forces were ambushed while crossing a bridge.^[2]^[3] During the ambush, the commander of the brigade, Oleksandr Vitaliyovych Radievskyi was killed^[4]^[5]^[6] along with two other soldiers (Pavlo Leonidovych Snitsar^[4]^[5] and Ihor Oleksandrovych Kotsar^[7]^[8]) who were also killed in the ambush.

The brigade also saw combat in the Battle of Marinka enforcing ceasefire, during which on 12 March 2016, a soldier of the brigade (Oleksandr Mykolayovych Svirskyi) was killed as a result of the injuries sustained in the battle.^[9]

On 23 August 2018, the brigade was awarded the honorary name of "Petro Kalnyshevsky", the last Kish otaman of the Zaporozhian Sich of Ukraine.^[10]^[11]

Since 8 February 2022, the brigade performed duty in Mariupol and was deployed in the city when the Russian invasion of Ukraine started on 24 February, and took part in the Siege of Mariupol, some of its personnel were trapped in the Azovstal Steel plant where a female soldier of the brigade (Lyudmila Frankivna Usenko) was killed on 8 May 2022 as a result of a Russian missile strike.^[12] After the capture of Mariupol, some personnel of the regiment were taken captive amongst them Konstantin Sychak was officially sentenced to 26 years in prison on 7 August 2023.^[13]

In 2024, the brigade was fighting in Zaporizhzhia Oblast where the personnel of the brigade captured a Russian Marine in April 2024 in the village of Urozhaine.^[14]