Ukrainian volunteer battalions

Ukrainian volunteer battalions (Ukrainian: Добровольчі батальйони, romanized: Dobrovolchi bataliony, more formally Добровольчі військові формування України, Dobrovolchi viiskovi formuvannia Ukrainy, 'Volunteer military formations of Ukraine', or abbreviated Добробати, Dobrobaty) were militias and paramilitary formations mobilized as a response to the perceived state of weakness and unwillingness of the regular Armed Forces to counter rising separatism in spring 2014.

They trace their origins to the "Maidan Self-Defense" militias formed during the Euromaidan in 2013 to confront Yanukovych Government and the pro-Russian Anti-Maidan movement, and many of its first volunteers were activists or sympathizers of the Euromaidan movement. The earliest of these volunteer units were later formalized into military, special police and paramilitary formations in a response to the Russian military intervention in Ukraine in 2014. With the main Armed Forces in disaray, with poor equipment, organization and inept leadership, the volunteer battalions and the National Guard took the brunt of the fighting in the first months of the war. Most of the battalions initially didn't receive money from the government and were self-funded; some were backed by Ukrainian oligarchs while others received donations or started internet crowdfunding campaigns. Most of the formations were formed or placed under command of the Ministry of Internal Affairs — as "Special Tasks Patrol Police" — and Ministry of Defence — as "Territorial Defence Battalions". A minority of battalions were independent of state control.

As of September 2014, 37 volunteer battalions had taken an active part in the battles of the war in Donbas. Some of the battalion fighters are former Euromaidan activists, but their social background are highly diverse, including mostly students and military officers. Ideologically, they held a broad form of Ukrainian patriotism and opposition to separatism, with some specific units (such as the Ukrainian Volunteer Corps and Azov Regiment) holding radical far-right ideas. They enjoyed a high level of support in Ukrainian society, ranked second among the most respected institutions in the country. However, their close ties with oligarchs and some political organizations raised fears of the volunteer formations becoming politicized or turning into private armies. The Volunteer Battalions were also frequent target of Russian propaganda, characterized by Russian media as "fascist", "neo-nazi" or "Banderite" formations, and frequently accused of atrocities against civilians in the Donbas region. In 2023, a number of former volunteer battalions were designated as a terrorist organization by Russia.

Ordered to leave the front lines in 2015, the volunteer battalion phenomenon was largely over within a year of its beginning. Most units continued as fully integrated as units of either the Ukrainian Army or the National Guard of Ukraine.