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Where are the machineguns? I saw a few photos of heavy (and ancient) machineguns in field fortifications, but other than that - crickets. Machineguns shooting down quadcopters? Haven't seen that.
Are mortars proving themselves or not? I have read a bit about Russian mortar teams, but those may have been the weird Russian long-barrelled mortar-guns rather than normal mortars. I've also seen footage of mortar bombs being delivered by motorcycle, that's all. I suspect the short range makes resupply too troublesome by now, but what did mortars do in 2022-2024?
What about artillery radars? I understand they wouldn't last this long far enough forward to be of use now, but what about 2022/23? NATO expected WW3 to include lots of artillery duels based on artillery locating radars. Sure, modern navigation did lead to individual gun placement rather than battery placement, but I saw some photos of Russian batteries, so they did exist. Were they hit with help of radars or not? What about the battlefield surveillance radars?
What altitude do Russian cruise missiles cruise at? I saw video that seemed to suggest rather 60...100 m than 30 m (Russians don't use ft. Terrain-following radars of the 70's were capable of ~60 m autopiloted flight, ~30 m is reasonable for less than 45 minutes with manual flight with good visibility).
Did the Iskander cruise missiles turn out to exceed the INF treaty limit of 500 km or not?
Did the Iskander quasiballistic missiles turn out to exceed the INF treaty limit of 500 km or not?
Why are the Russians unable to procure heavy payload multicopters in quantity when they're supposed to be backed by China?
Did Nozh ERA work well or not?
I have seen almost no footage of MBT vs. MBT actions. Were they common in the first weeks?
What's better to destroy the Crimea Bridge; Mephisto warhead of Taurus into the foundations or continuous rod warheads against the suspension part's cable bundles?
Why are TM-62 anti-tank mines used so widely for demolition work? It should be easily possible to provide demolition charges for demolition jobs, even civilian companies have those for demolition work.
Are anti-tank mines still important or is the stopping power now vested in battlefield interdiction based on drones?
Does Russia use satellites for GPS jamming or not? (Satellites could not be countered by phased directional antennas.)
Was the WW2 data about infantrymen getting near-useless after a certain quantity (IIRC 130) of combat days confirmed?
Did any Russian tanks with Arena or Drozd hard kill defences show up in combat?
Did the trade show-grade BMP-3s with lots of heavy ERA show up in combat?
Are tethered drones in use?
Why aren't the Russians able to regularly find & hit Ukrainian air defence radars or combat aircraft on the ground?
Related to the previous question: How useful is Russian satellite reconnaissance for battlefield uses?
How quickly can Russian artillery and mortars react to calls (I understand this is going to be a huge range of response times, so a distribution would be interesting)?
Why can't the Russian navy reliably kill off simple motorboats? Even WW2 radars were already able to detect a periscope!
Why can't the Russians stop Ukrainian very low level air attacks despite having missiles such as R-37M and 9M96E2?
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