The Churchill Mk. VII Infantry tank is unlocked via Anvil Specialization. The Mk. VII is improved from it's predecessor featured in Company of Heroes: the Mk. IV. It has incredibly thick armor and an insane hitpoints pool, making it an ideal damage sponge. Use this tank to spot and take fire for your damage-dealing vehicles, such as Sherman Fireflies. In terms of combat performance, the Churchill is comparable to the Soviet KV-1 heavy tank.
This tank is excellent when facing any variety of targets, except only the heaviest Axis armor. It's frontal armor is amazing and can deflect all but the best guns but watch out for flanks. The Churchill turns quite slowly and can easily be flanked to expose it's weak side and back armor, so it's best to have support. The Crew Self Defense ability makes this tank able to roll right up to an anti-tank gun, kill its crew, and roll back to safety for repairs.
Like any other tank the Churchill gains veterancy through combat.
1 (xp here): Crews will fire at infantry on the sides with small arms.