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 2S3 Akatsiya self-propelled artillery 30th Separate Mechanized Brigade Prince Kostiantyn Ostrozkyi combat mission Donetsk sector Viacheslav Madiievskyi Ukrinform NurPhoto artillery unit military operation Ukraine Donetsk mechanized brigade artillery military Prince Kostiantyn Ostrozkyi photojournalism warfare artillery preparation combat military sector artillery mission defense Ukrinform photo Ukrainian military artillery brigade military equipment self-propelled unit artillery combat military strategy armed forces.