So far in this war the Russians haven’t shown much talent for maneuver warfare, particularly combined-arms fighting, and I would be surprised if they suddenly got better at it just because it’s on the other side of the border. Once the Kherson offensive culminated in ‘22 and the Ukrainians couldn’t continue, the Russians had time to dig in, mine the hell out of the front, and bring up artillery - static defensive war is one thing they are good at. There’s a question of whether the UAF can hold the line in the east while sustaining this offensive, but you gotta figure the Russians are going to pull their Cat A units from the line to fight this. Putin *has* to defeat this in a big way for his domestic audience.
I don’t know if there’s any Russian territory within Ukraine’s reach that’d make them give up Crimea in exchange…not like they’re going to grab St Petersburg and burn down Vova’s childhood home or anything…but if there is, it’s Kursk.
Is this though an example of their actually being good at defensive warfare, or more just placing a bunch of obstacles in the way of the understrength Ukrainian forces? I mean probably anyone can be good at defensive warfare in that sense, by mining the daylights out of the terrain and placing lots of obstacles in the way. They also have more artillery and artillery ammo than the Ukrainians right now. As for their learning, I doubt they will. Soviet doctrine emphasized in particular combined arms and maneuver warfare. They even emphasized this more after WWII, reducing the individual sizes of armies because the thinking was that in a future nuclear war with NATO, Soviet forces were going to need to be fast and mobile on the battlefield with nukes detonating.
When the Germans invaded in 1941, the Soviets initially had no real idea how to fight as Stalin had shot something like 30,000+ officers. However, by 1942, they had clearly learned (and re-learned) a lot. They successfully snuck multiple armies around the Germans at Stalingrad, then destroyed the Sixth Army. They also utilized very smart tactics within the city itself to grind the Germans down.
They then launched an offensive at the Germans, which von Manstein played chicken and pretended to flee to trick the Soviet generals, only to swing his forces around at the last second and destroy three Soviet armies. The thing is though, this was due to Stalin's meddling, as his generals had warned him. The Soviets had learned through hard experience with the Germans that you do not just straight attack them, as they'll see it coming and were very wily on the defense. So you had to utilize extensive deception tactics and also have your logistics solid to sustain the offensive. Stalin insisted he knew better though, so multiple under strength Soviet armies went at the Germans.
Thing is, this was only about a year and eight months into the German attack. The Germans attacked June 22,, 1941. This reversal was February-March of 1943, yet we already see a huge amount of sophistication on the part of the Soviets. As it stands right now, the Russians are more than two years into this war and don't seem to have learned much at all.