Although looking very similar to the Churchill Kangaroo, the Churchill ARV has a completely different task. It’s a recovery tank and has therefore the same ability as the already available Bergetiger. That means you can repair friendly vehicles if you’re close to them. Because of the good protection and low silhouette it’s possible to repair or supply them even during battles and tip the balance in your favor! Also you can use it like the Churchill Kangaroo as armoured personnel carrier. Though, it doesn't work as a mobile spawnpoint like that vehicle.
The armor recovery variant is very similar to the Churchill Kangaroo, but can be identified by the additional towing cables, logs and other stuff that has been added on the vehicle.