As anti-foreign and anti-Christian Boxer fighters besieged diplomatic compounds in Beijing, an Eight-Nation Alliance of American, British, Japanese, Russian, French, German, Austro-Hungarian, and Italian troops pushed to relieve them. Fighting around Tianjin in early July 1900 marked a critical phase in a conflict that would end Qing dynasty prestige and accelerate China's slide toward republican revolution.
The Boxers—members of a secret society formally called the Society of Righteous and Harmonious Fists—blamed foreign missionaries, merchants, and diplomats for China's humiliations after decades of unequal treaties and territorial concessions. By the summer of 1900 their uprising, tacitly backed by the Qing court under Empress Dowager Cixi, had trapped foreign nationals and Chinese Christians inside Beijing's Legation Quarter under siege.
An unusual coalition of rival imperial powers—normally jockeying for spheres of influence in China—set aside their competition to mount a joint relief expedition. Fighting was fierce and often chaotic, with international units struggling to coordinate command and language across nationalities as they fought through Tianjin toward Beijing.
The siege was eventually broken in August, and the Qing court fled Beijing in humiliation. The subsequent Boxer Protocol imposed crushing indemnities on China, further discrediting the Qing dynasty and fueling nationalist and revolutionary sentiment that would culminate in the 1911 revolution and the dynasty's collapse.