Russian GRU (special forces) had their ar5ses handed to them by Ukraine at Lyman. Russia claims the loss of the city was down to local volunteers from the so-called Luhansk People’s Republic, but this rather well researched piece by the BBC’s Russian service shows otherwise:
https://www-bbc-com.translate.goog/r...en&_x_tr_hl=en
(Original report is in Russian, this link is to the Google translation)