Good tank for blocking 2x damage in Soviet/China. Union-12

churchill50: The SU-100M1 is definitely a great choice for that mission. Some others to consider would be:IS-M (as already mentioned by others), Obj 705, Obj 705A. All are insane sidescrapers that are mostly impenetrable when positioned correctly.Obj 777 II has some decent armor, and is rare enough that most people aren't too familiar with its armor layout. I've found it to be pretty effective at blocking damage.IS-4. Same as the Obj 777 II in that most people aren't too familiar with how to pen it, but with the added benefit of being able to overangle when sidescraping which makes most people think they can easily pen the side. The only downside is that the IS-4 has 2500+ HP (depending on equipment and field mods), so you'll need 5k blocked for that mission.The KV-4 might be decent, since most people underestimate it. The issue is that the turret and cupola are both weak and can't be hidden very well. Also note that if you take Improved Hardening to increase your HP, that also increases the amount of damage you need to block for that mission. So it can be best to drop Hardening while attempting this mission. Best of luck OP! Damage blocked missions are annoying.