(Translated by https://www.hiragana.jp/)
gunnery sergeant - Wiktionary, the free dictionary

English

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 Gunnery Sergeant on Wikipedia

Noun

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gunnery sergeant (plural gunnery sergeants)

  1. (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.

References

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