On 9 February 1945 , a force of Allied Bristol Beaufighter aircraft suffered Bodily_harm many losses Earnings_and_losses , during an attack Attack on the German destroyer `` Z33 '' and its escorting Patrolling vessels ; the operation was called Name_conferral `` 'Black Friday ' '' by the Allied survivors .

The decision to attack Attack `` Z33 '' and her escorts , rather than a nearby group of merchant ships , followed Motion instructions Education_teaching from the British Admiralty to RAF Coastal Command .