The Churchill I leads the charge, while the rest follows behind.
The Churchill Crocodile is crippled by a tiny base range that leads it to ignoring everything not in its direct path. It does cook a mean BBQ though.
The T-70 skill is a +25% armor aura, so it comes along to debuff with its gun while also helping keep everyone alive.
The M5 Stuart, Archer, & KV-1 are next tanks to be replaced. I want a light with an attack aura, a better TD, and a 4 or 5* heavy tank with similar base range & speed stats to the Churchill.
The M40 & Sexton usually just come along for the ride, but occasionally they get used. Especially on Destroyer boss missions that last longer.