The U-boats at sea were recalled on 21 October.[1] In response, on 22 October Scheer ordered Admiral Hipper, commander of the High Seas Fleet, to prepare for an attack on the British fleet, utilizing the main battle fleet, reinforced by the newly available U-boats. Hipper's order was promulgated on 24 October; Scheer approved it on 27 October.[2] The Fleet then began to concentrate at Schillig Roads off Wilhelmshaven to prepare for the battle.