sentences:  Accordingly, on 12 April 1915, III Scouting Group was detached from the High Seas Fleet and the ships were transferred to the Baltic Sea to operate against the Russian Baltic Fleet.On 15 April, the ships arrived in Kiel, where they came under command of then-"KAdm" Hopman, the commander of scouting forces in the Baltic.Hopman was then in the process of planning a major attack on Libau in conjunction with an attempt by the German Army to seize the city.