[AnotherGoodName]

https://en.wikipedia.org/wiki/2022_Sumy_clashes had a large contingent of civilian volunteers that won decisively against the main Russian army.

>Ukraine's paratroopers were ordered to withdraw from the city, leaving the city's defense to a few thousand local volunteers armed with rifles, limited anti-tank weapons and no armed vehicles or heavy weaponry.

[duxup]

I'm not sure that speaks to the quality of training considering the state of Russian forces, tanks driving alone, crews abandoning equipment, and so on.