The Huai Army, named for the Huai River, was a military force allied with the Qing dynasty raised to contain the Taiping Rebellion in 1862. It was also called the Anhui Army because it was based in Anhui province. It helped to restore the stability of the Qing dynasty. Unlike the traditional Green Standard Army or Eight Banners forces of the Qing, the Huai Army was largely a militia army, based on personal rather than institutional loyalties. It was armed with a mixture of traditional and modern weapons. Li Hongzhang, a commander in the Xiang Army, created the Huai Army in October 1861. It succeeded Zeng Guofan’s Xiang Army. The Huai Army itself was succeeded by the New Army and the Beiyang Army, which were created in the late 19th century.

The Eight Banners were administrative and military divisions under the Later Jin and Qing dynasties of China into which all Manchu households were placed. In war, the Eight Banners functioned as armies, but the banner system was also the basic organizational framework of all of Manchu society. Created in the early 17th century by Nurhaci, the banner armies played an instrumental role in his unification of the fragmented Jurchen people and in the Qing dynasty's conquest of the Ming dynasty.