Combat work of 30th Separate Mechanized Brigade?s artillerymen in Donetsk sector

war Russian-Ukrainian war military service artillerymen artillery 30th Separate Mechanized Brigade named after Prince Kostiantyn 30th Separate Mechanized Brigade combat mission gun crew Donetsk region Gunners 2S3 Akatsiya self-propelled artillery 30th Separate Mechanized Brigade Prince Kostiantyn Ostrozkyi combat mission Donetsk sector Viacheslav Madiievskyi Ukrinform NurPhoto artillery unit military Ukraine warfare defense mechanized brigade artillery military unit Prince Kostiantyn Ostrozkyi combat mission Donetsk sector photojournalism conflict Eastern Europe armed forces military operation artillery support combat zone military strategy.