The radiator for the rear-mounted engine faces backward, which protects it from bullets on the attack but not on retreat. The pintle hitch gave the XR311 a tow rating of 1,500 pounds on the highway and 1,000 pounds cross country. Test photos show the XR311 towing artillery, including a 105mm howitzer. The vehicle is marked as belonging to the 1st Cavalry Division. Some XR311 models were tested by operational units but it isn’t clear if this one was actually tested by 1st Cav personnel.
