Taiping Rebellion: The Ever Victorious Army defeats Taiping forces at the Battle of Cixi.

The Taiping Rebellion, also known as the Taiping Civil War, Revolution, or Movement, was a civil war in late imperial China between the Qing dynasty and the rebel Taiping Heavenly Kingdom. The conflict lasted 14 years, from its outbreak in 1850 until the fall of Taiping-controlled Nanjing—which had been renamed to Tianjing —in 1864. The last rebel forces were defeated in August 1871. Estimates of the conflict's death toll range between 20 to 30 million people, representing 5–10% of China's population at that time, while higher estimates range from 73 to 100 million, roughly up to one quarter of the Chinese population at that time, making it perhaps the deadliest civil war in all of human history. While the Qing ultimately defeated the rebellion, the victory came at a great cost to the state's economic and political viability.