Maybe the turrets had sizeable holes in them? A partly burnt out Sherman would have it's armour quality drastically reduced by the heat and not suitable for rebuilding but be good enough for a tractor.
Maybe having a 17lbr that could be towed up hilly Italy might be more valuable than a 75mm armed Sherman.
Maybe having a 17lbr that could be towed up hilly Italy might be more valuable than a 75mm armed Sherman.