 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 Arielli 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 . 
 On 23 December , Lieutenant @-@ General Dempsey <a href='null_genetive' title='1'><mark>'s</mark></a>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 Arielli 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 . 
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