An excellent clip showcasing an Ukrainian assault on a Russian defense position. Some thoughts on the video. Note: I am not an infantry man or a member of armed forces, just someone with a decade long interest in the military (I'm sure anyone who played Call of Duty or Hearts of Iron can relate).
The video in questions shows Ukraine's 28th Mechanized Brigade attacking a Russian defense position. The tweet states that Ukraine claims 35 Russian servicemen killed. I did not see that many men in the picture.
UR-77 Meteorit is used to either clear, or check for mines. Two charges were used. After their employment, three Ukrainian BMPs moved forward in a single line-column while applying suppressive fire at the Russian defense line. Upon reaching the first tree line, infantry disembarked the BMPs, squad leaders carefully moved forward towards the enemy as the BMPs continued to provide suppressive fire. A clip of three Russian servicemen fleeing is seen at the end.
My Analysis:
I hypothesize this is a probing force, meant to clear the first line of contact, so that more Ukrainian forces can either help clear out the rest of this defensive line, or set up control over this area to continue moving forward.
I did not see 35 Russian defenders and I am quite skeptical that this clip shows more than a squad on the Russian side. This first line of contact seems to be thinly manned. If I had to guess, this is the first contact line, or a low-priority area, mean to notify the main Russia defense force responsible for this piece of general AO.
In particular, it looks like a flare of some kind was shot at 01:00. At least that's what I think it is, and it would certainly feed into my theory.
There is no ATGM fire in response to the BMPs. This is drone footage, so Ukraine very likely has the superior battlespace awareness in this engagement. The BMPs are firing in the general direction of the Russians, indicating that they are aware of where at least some of the Russian defenders are hiding.
The assault team is careful and slow, which makes sense given that they suspect there are mines in this area. The UR-77 hypothetically cleared the path between the two tree lines of mines, giving access to both the infantry and BMPs to drive towards the second tree line.
With coordination, numbers, and battlespace awareness firmly on the side of the Ukrainian attacker, the Russians' decision to withdraw here is perfectly sensible. High ground is not visible around here, there aren't any substantial fortifications or operationally important reasons to hold this ground. At least visible in the footage.
Regarding training; there is no proof that Ukraine has enjoyed superior training in this clip. Nor do I think that training/equipment plays a decisive role in these actions. Instead the three factors mentioned before, are much more important.
I hypothesize, that if there was a real Russian force defending this area, there would be a recon team from high ground or a drone, giving directions to the Russian defenders, making this assault much, much more difficult.