Japan during World War I land targets in Shandong province and ships in Qiaozhou Bay from the seaplane-carrier "Wakamiya". On 6 September 1914 a seaplane launched by "Wakamiya" unsuccessfully attacked the Austro-Hungarian cruiser "Kaiserin Elisabeth" and the German gunboat "Jaguar" with bombs. The Siege of Tsingtao concluded with the surrender of German colonial forces on 7 November 1914. In February 1915, marines from the Imperial Japanese Navy ships based in Singapore helped suppress a mutiny by Indian troops against the British government. With Japan's European allies heavily involved in the war in Europe, Japan sought further to consolidate its position in China by presenting the
War crimes in occupied Poland during World War II at Chełmno according to postwar verdict by West Germany, although up to 340,000 victims were estimated by the Polish Main Commission for Investigation of German Crimes in Poland (GKBZNwP), a predecessor of the Institute of National Remembrance. Following the Wannsee Conference of 1942, as part of highly secretive Operation Reinhard in occupied Poland, the German government built three regular killing centres with stationary gas chambers. It was the most deadly phase of the Final Solution, based on implementing semi-industrial means of killing and incinerating people. The new facilities included Treblinka extermination camp (set up in July 1942), Bełżec (March 1942),