It is difficult to know what is true and what is not true at this time.
From the videos I have seen it would appear the Russian were not prepared for war.
From how they travel, how they respond to an ambush or how they set up their base camps, it all looks like training exercises where there are no real bad guys out to kill them.
In combat it is easy to pick out the officers and the commanders. The more radios you see, the higher the rank.
These guys seem to prefer cell phones ...