Operation Uranus trapped between 250,000 and 300,000 Axis soldiers within an area stretching from east to west and north to south. The pocket contained four infantry corps, a panzer corps belonging to the Fourth Panzer and Sixth Armies, and surviving elements of two Romanian divisions, a Croatian infantry regiment and other specialist units. Trapped equipment included around 100 tanks, 2,000 artillery pieces and mortars and 10,000 trucks. The withdrawal to Stalingrad left lines of retreat littered with helmets, weapons and other equipment, and heavy equipment which had been destroyed was left on the side of the road. Bridges spanning the Don River were jammed with traffic, as surviving Axis soldiers hastily made their way eastwards in the cold weather, attempting to escape Soviet armor and infantry threatening to cut them off from Stalingrad. Many wounded Axis personnel were trampled, and many of those who attempted to cross the river on foot on the ice fell through and drowned. Hungry soldiers filled Russian villages scouring for supplies, while supply dumps were often looted in search of cans of food. The last stragglers crossed the Don River by 24 November, and demolished the bridges to seal off the Fourth Panzer and Sixth Armies from the Soviets in Stalingrad.