Sinking of the Lusitania & The Gorlice-Tarnów Offensive

Ignoring the warnings and cruising carelessly slow the RMS Lusitania is hit by a torpedo of the German U-Boat U20. Almost 2000 people die during the sinking of the Lusitania. At the same time the German and Austro-Hungarian army start a combined surprise offensive in the Carpathians. The Gorlice-Tarnów Offensive is a huge success for German commander August von Mackensen.