The erosion of Chinese sovereignty contributed to a spectacular anti-foreign outbreak in June 1900, when the "Boxers" (properly the society of the "righteous and harmonious fists") attacked foreign legations in Beijing. This Boxer Rebellion provoked a rare display of unity among the colonial powers, who formed the Eight-Nation Alliance. Troops landed at Tianjin and marched on the capital, which they took on 14 August; the foreign soldiers then looted and occupied Beijing for several months. German forces were particularly severe in exacting revenge for the killing of their ambassador, while Russia tightened its hold on Manchuria in the northeast until its crushing defeat by Japan in the Russo-Japanese War of 1904–1905.