In September 1914 Japan had abruptly occupied the German concession in the city of Qingdao on the Shandong Peninsula. As of 1916 Chinese volunteers were doing labour service for the Entente. While Germany intensified its U-boat campaign in the first days of March 1917, 500 Chinese labourers drowned when the French troopship Atlas was torpedoed. Was Beijing not under the same obligation as Washington to protect its citizens against German aggression?