Sniper

A sniper was a type of marksman.

Snipers were among the Bannermen led by Gavrok. (TV: Delta and the Bannermen)

recommended eight snipers, with two trained on each of her hearts and three for her brain stem, so that Clara Oswald could feel safe while speaking to her, noting that they'd have to "switch [her] off fast" before she could regenerate. (TV: The Magician's Apprentice)