"staff captain" meaning in English

{
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      "form": "staff captains",
      "tags": [
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      "expansion": "staff captain (plural staff captains)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "kind": "other",
          "name": "English entries with incorrect language header",
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          "source": "w"
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      "glosses": [
        "The holder of various military ranks, now usually translated from other languages. In the British Royal Navy the master of the fleet was ranked as a \"Staff Captain\" after 1864, just below the Captain, but he was not considered an executive branch officer and was not eligible for further promotion, though some exceptions were made."
      ],
      "id": "en-staff_captain-en-noun-L0xRhXFh",
      "links": [
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          "military",
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        [
          "rank",
          "rank"
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      ],
      "wikipedia": [
        "staff captain"
      ]
    }
  ],
  "word": "staff captain"
}

{
  "forms": [
    {
      "form": "staff captains",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "staff captain (plural staff captains)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        "English countable nouns",
        "English entries with incorrect language header",
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        "English multiword terms",
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      "glosses": [
        "The holder of various military ranks, now usually translated from other languages. In the British Royal Navy the master of the fleet was ranked as a \"Staff Captain\" after 1864, just below the Captain, but he was not considered an executive branch officer and was not eligible for further promotion, though some exceptions were made."
      ],
      "links": [
        [
          "military",
          "military"
        ],
        [
          "rank",
          "rank"
        ]
      ],
      "wikipedia": [
        "staff captain"
      ]
    }
  ],
  "word": "staff captain"
}