 On 23 December , Lieutenant @-@ General Dempsey 's XIII Corps launched a new attack to push back the German line from Orsogna . In the afternoon , the British 5th Infantry Division attacked on the right wing of the Corps front toward the <unk> stream . Their objective was to secure the flank of the 2nd New Zealand Division , which was in turn to attack northwest and west from the salient in order to roll up the Orsogna defences from the north . 
