Revolutionary Insurgent Army of Ukraine

The Revolutionary Insurgent Army of Ukraine (Ukrainian: Революційна Повстанська Армія України, РПАУ, romanized: Revoliutsiina Povstanska Armiia Ukrainy, RPAU; abbr. RIAU), also known as Makhnovtsi (Махновці), named after their founder Nestor Makhno, was an anarchist army formed largely of Ukrainian peasants and workers during the Russian Civil War.