 In the aftermath of the loss of SMS <unk> at the Battle of Dogger Bank , Kaiser Wilhelm II removed Admiral Friedrich von <unk> from his post as fleet commander on 2 February . Admiral Hugo von Pohl replaced him as commander of the fleet ; von Pohl carried out a series of sorties with the High Seas Fleet throughout 1915 . The first such operation — Markgraf 's first with the fleet — was a fleet advance to <unk> on 29 – 30 March ; the German fleet failed to engage any British warships during the sortie . Another uneventful operation followed on 17 – 18 April , and another three days later on 21 – 22 April . Markgraf and the rest of the fleet remained in port until 29 May , when the fleet conducted another two @-@ day advance into the North Sea . On 11 – 12 September , Markgraf and the rest of III Squadron supported a <unk> operation off <unk> . Another uneventful fleet advance followed on 23 – 24 October . 
