Diary for Thursday, May 13, 1915:
East Africa: 200 Rhodesian troops repel 200 German troops on river Tsavo. British donkey transport experiment fails.
Dardanelles: British battleship Goliath (570 crew members lost) sunk by Turk torpedo boat Muavenet-i-Millet (commanded by German Lieutenant Firle) at 0116 hours in thick mist.
U21 (Hersing) reaches Cattaro with 1/2 fuel left having survived 3 Allied warship attacks, sails for Dardanelles.
USA: First government Lusitania protest.
Italy: Prime Minister Salandra resigns, but King refuses to accept.
Britain: Government decides to intern all enemy aliens of military age. Enemy Emperors and Princes lose Kinght of Garter etc.
Leeds National Shell Factory approved.