I recently read One Soldier's War by Babchenko about his experience in Chechyna. In '91 Dudayev (former Russian Pilot) seized control of the region and expelled the Russian army. Lawlessness and chaos ensued and by the end of '94, a full blown war broke out to take Chechyna back.
100% of the RU military horrors we are seeing in Ukr took place in Chechyna, but on both sides. The evil that permeates their culture is not new. The Chechynan war was fought in cities, though there were some rural battles...for the most part it was street by street, urban warfare. Mass city bombings, total disregard for civilian lives etc...the picture this guy paints of the lack of training, leadership, total disregrad for a military hierarchy and structure was incredible. Hard to believe a superpower would have such little infrastructure...it was a total slog, fubar type stuff. No supply chain, lack of food, water, basic neccessities to arm a fighting force, it really was every man for themselves.
I read the book mostly b/c I wanted to learn why/where this present day culture came from and my feeling is the history of what we saw in Chechyna and what we are seeing in UKR goes back to Lenin, Stahlin and back as far as that country has existed. Save for the fact they have oil money....take that away and Russia is closer to a third world country than any modern society. Patton was correct, we should have marched our boys all the way to Moscow and pushed the RU out of Germany, I think had we done that, perhpas the last 60 - 70 years history is different, but that's another matter.