Answer: cannoneer

AnswerCrossword Clue
CANNONEEROne with the big guns
CANNONEERArtilleryman.
CANNONEEROne with big arms
CANNONEERBattle assignment, once
cannoneerAn artilleryman who positioned and fired a cannon
cannoneera soldier who managed and fired a cannon also CANNONIER