Training for Urban Combat

The battle for the dombas is primarily an artillery war, with the russians creeping forward slowly behind their heavy artilry. Has there been much a military experience across europe since the second world war of that kind of fighting? And i imagine it's quite difficult to train for that. No, if this hasn't imagine, you can do training for urban combat. But how do you prepare psychologically for being under fire under heavy artillery for day after day, week after week? Well, mi's very difficult, is the short answer. You see nothing on this scale in in europe since second world war.