Battle of Sarhu

The Battle of Sarhū (薩爾滸之戰, Sà'ěrhǔ zhī zhàn) refers to a series of battles between the Later Jin dynasty (later known as the Qing dynasty) and the Ming dynasty and their Joseon allies in the winter of 1619. The battle is notable for the heavy use of cavalry by the Later Jin in defeating Ming and Joseon forces equipped with hand cannons, cannons, and matchlocks.

• http://en.wikipedia.org/wiki/Battle of Sarhu