"Think of it this way, you are a Russian soldier in a convoy of 3 trucks, a huge explosion goes off from an activated mine, then some RPGs go off, after that Chechens open up with automatic fire. How is it possible to resist an attack so sudden and while you are in a transport vehicle? Its not. Also by the time any other of your forces hear of this you are dead and the Chechens have left. What method can the Russians use against this except going house to house in villages? As for extra brutality from Russian forces... what else is a soldier going to do to someone who is involved in killing his friends that are deployed and his friends back in civilian life?"
I haven't been in guerilla companies, but also been trained some basic guerilla tactics and how to make ambushes, booby traps and how to act in guerilla warfare, wich belongs to infantry training. A suddenly made ambush is the best and easiest way to deal with an enemy column. For one example: first choose a suitable place for ambush, then place AT/AP mines and traps. The best way to deal with infantry is of course to knock out their transports before soldiers dissmount and if they succes to dissmount, they may take cover from behind the vehicles or the oppositing side of the road wich is of course booby trapped with landmines, claymores or exploding detonation wire wich is placed on the ground. Then just blow them up when soldiers are lying on it.
Suddenly strike when unexpected, dirty works very quickly and then dissappearing before enemy responses or gets reinforcements. Then it's time to deal with pursuiting enemy patrols and get them lost from trails or destroyed.
And to get self well ambushed from close range, there is only a few possiblities to survive. When sitting in APC, it is bad to stay inside but bad thing also to try dissmount and get propably shot at the APC's backdoors and ambusher is waiting for soldiers coming out. Shit happens but the best thing to survive an ambush is to avoid it but if really well ambushed man won't realize what hit him