In 1652–1689, during the Sino-Russian border conflicts, the Qing dynasty engaged and pushed back about 2,000 Russian Cossacks in a series of intermittent skirmishes. The frontier in the south-west was extended slowly, in 1701 the Qing defeated Tibetans at the Battle of Dartsedo. The Dzungar Khanate conquered the Uyghurs in the Dzungar conquest of Altishahr and seized control of Tibet. Han Chinese Green Standard Army soldiers and Manchu bannermen were commanded by the Han Chinese General Yue Zhongqi in the Chinese expedition to Tibet (1720) which expelled the Dzungars from Tibet and placed it under Qing rule. At multiple places such as Lhasa, Batang, Dartsendo, Lhari, Chamdo, and Litang, Green Standard troops were garrisoned throughout the Dzungar war.