1. Virtually any penetration of the armor of a Soviet era vehicle ends catastrophically. Especially the T-72 tank. The combustible cartige cases for its 125mm main gun are stored on an open turntable at the bottom of the turret ring. When you see the “blowtorch” out the turret hatches, that’s the powder from those shells burning.
2. Never, ever operate tanks and armor in a city without strong infantry support. Dismounted infantry provides better observation of potential firing points, and better suppression of dismounted anti-armor teams.
3. FSA may not be the most professional force in the world, but the guy running up to toss a grenade into the hatch of a T-72 (twice!) has all the balls you could ask of any grunt.