Question: In which oblasts of Ukraine did the Sparta Battalion fight the Ukrainian army?
Sentence (from "War in Donbass"): These demonstrations, which followed the annexation of Crimea by the Russian Federation, and which were part of a wider group of concurrent pro-Russian protests across southern and eastern Ukraine, escalated into an armed conflict between the separatist forces of the self-declared Donetsk and Luhansk People's Republics (DPR and LPR respectively), and the Ukrainian government.
Relevant evidence: No