PMAa soldier in the past who used a musket 火枪手，滑膛枪手
Examples from the Corpus
musketeer• The vast army numbered around 100,000 cavalry and 25,000 musketeers as well as divisions of war elephants and camel-artillery.• Later in life he was to portray himself as the Minotaur or a musketeer.• Aurangzeb's musketeers held their fire until the last minute, then discharged their entire artillery.