Definition of "cannonier"

Then ſe the bringing of our ordinance / Along the trench into the battery, / VVhere we wil haue gabions of ſix foot broad / To ſaue our Cannoniers from muſket ſhot, […]

c. 1587–1588 (date written), [Christopher Marlowe], Tamburlaine the Great. […] The Second Part […], 2nd edition, part 2, London: […] [R. Robinson for] Richard Iones, […], published 1592; reprinted as Tamburlaine the Great (A Scolar Press Facsimile), Menston, Yorkshire; London: Scolar Press, 1973, Act III, scene i, signature [G6], recto