 By New Year's Eve with a supreme effort, the Nationalists were on the La Muela heights and actually broke into the town to take the bullring and the railway station.But they could not hold the gains within the town.Then the weather actually turned for the worse with the start of a four-day blizzard, of snow falling and temperatures of minus 18° C. Fighting ground to a halt as guns and machines froze, and the troops suffered terribly from frostbite.