 Complete the following phrase:  On 10 February 1916, V26 took part in a sortie by 25 torpedo boats of the 2nd, 6th and 9th Torpedo-boat Flotillas into the North Sea. The sortie led to an encounter between several German torpedo boats and British minesweepers off the Dogger Bank, which resulted in the British minesweeper being torpedoed and sunk by ships of the 2nd Flotilla. On 24 April 1916, the German battlecruisers of I Scouting Group and the light cruisers of the II Scouting Group set out from Kiel on a 