Definition of munitioneer in US English:
munitioneer
noun
A worker in a munitions factory; a maker or supplier of ammunition.
Origin
Early 20th century; earliest use found in Edward Verrall Lucas (1868–1938), essayist and biographer. From munition + -eer. Compare slightly earlier munitionette.
Pronunciation
munitioneer
/mjʊˌnɪʃəˈnɪə/