I see a claim that Ukraine has resumed conscription although the government states that
they wish an all-volunteer force after the war.
The rando social media account @SmartUACat@twitter.com has a story with verisimilitude about training with NATO forces in Afghanistan (but remember, rando social media account!)
https://nitter.net/SmartUACat/status/1679223826398212096#mThere is some typical military disorganization and overplanning: combat veterans get assigned to a Reconaissance 101 course and its hard to adjust the curriculum, there is lots of hurry up and wait and it takes some asking around to find ways to productively fill the rest of the days. There are some more substantive disconnects: the Ukrainian military conducts combat operations with all-digital tools (I hear they have lots of paperwork on paper) whereas the training course wants to make sure everyone can use paper maps and radios, drones are not as ubiquitous in training as they are in combat, and the section on spotting for artillery assumes you have unlimited firepower and a few targets whereas the Ukrainian military has more potential targets than weapons to hit them so needs to choose carefully which fires to direct against which targets.
Soldiers like to gripe, training gets scaled down for all kinds of reasons (complex military exercises are expensive and use up the same things that are needed in combat), and I hear about a lot of scouting on foot in UA (sometimes it can be useful to launch a drone somewhere that the other guy does not expect hostile drones). And like I said, the Ukrainian military seems to still have a giant pen-and-ink bureaucracy alongside all the tablets and smartphones. But I am not sure that anyone has a proven solution to this kind of fighting, just the rules of thumb "get air superiority if you can" and "avoid industrial positional warfare if you can."
A contact who was formerly an infantryman in the Territorial Army in the UK says that even a decade or two ago it was really hard to keep moving supplies up to the fighting troops and move the dead and wounded back if the other guys had half decent equipment. Industrial warfare consumes material fast and the other guy would always prefer to take it out before it is used in combat.
Many people on social media seem to fall into 'NATO troops the best' or 'Ukrainian army the best' and I think both are oversimplistic. I don't think any military is really prepared for a war like this (the big NATO militaries could go wild for a few weeks or months until they ran out of troops and equipment), and every army has lots of stupid because armies have to take Joe and Jane Average and put them in really difficult conditions.