(uncountable) The science of guns and gunfire, including aspects of bullet flight and impact. / (uncountable) The design and manufacture of guns, particularly those of a large caliber.

plural of gunnery

(military, US) A non-commissioned officer of rank E-7 in the United States Marine Corps, ranking above a staff sergeant and below a master sergeant or first sergeant.

plural of gunnery sergeant

(military, US) A non-commissioned officer of rank E-9 in the United States Marine Corps, ranking above a master sergeant/first sergeant and below a warrant officer. It is equal in grade to sergeant major

plural of master gunnery sergeant