Nothing has changed in eastern front warfare since WWI.
Sustaining a ground assault over a large field of operations is difficult and the defenders are at a major advantage.
The Germans solved this shit in WWII with their blitzkrieg tactics, but the defences have evolved which makes that sort of thing much more difficult again.
The Americans solved this in Iraq twice by using overwhelming force and superior technology.
The Russians simply don't have either, so are simply reverting to their WWI tactics of throwing as many men into the meat grinder as possible to wear the Ukrainians down.
Sustaining a ground assault over a large field of operations is difficult and the defenders are at a major advantage.
The Germans solved this shit in WWII with their blitzkrieg tactics, but the defences have evolved which makes that sort of thing much more difficult again.
The Americans solved this in Iraq twice by using overwhelming force and superior technology.
The Russians simply don't have either, so are simply reverting to their WWI tactics of throwing as many men into the meat grinder as possible to wear the Ukrainians down.