 Complete the following phrase:  On 3 May 1915 the battalion under the command of Major C.R. Pilkington, Lt-Col Heywood being unfit embarked at Alexandria on the SS Derfflinger, a captured German Norddeutscher Lloyd shipping line vessel that had just arrived with a cargo of wounded from the initial landings at Gallipoli. Derfflinger missed her intended landing spot at 