 Complete the following phrase:  The RAF repeatedly made large attacks against Brest that targeted the German battleships. The first raid took place on the night of 3031 March. On 6 April a British aircraft torpedoed Gneisenau. She was hit by four bombs during another raid on 10 April. It took until the end of 1941 for the damage inflicted in these two attacks to be repaired. Scharnhorst required repairs to her boilers which rendered her unable to participate in Operation Rheinübung, the raid into the Atlantic undertaken by Bismarck and Prinz Eugen, during May. Lütjens led this raid, and sank HMS Hood on 24 May. He was killed when 