"soldado raso" meaning in Spanish

{
  "etymology_text": "raso indicates in this case \"having no rank, echelon, etc.\".",
  "forms": [
    {
      "form": "soldados rasos",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "soldado raso m (plural soldados rasos)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "es",
          "name": "Military ranks",
          "orig": "es:Military ranks",
          "parents": [
            "Military",
            "Positions of authority",
            "Titles",
            "Society",
            "Leaders",
            "Occupations",
            "People",
            "All topics",
            "Work",
            "Human",
            "Fundamental",
            "Human activity",
            "Human behaviour"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "private"
      ],
      "id": "en-soldado_raso-es-noun-cV3ISTw2",
      "links": [
        [
          "military",
          "military"
        ],
        [
          "private",
          "private"
        ]
      ],
      "raw_glosses": [
        "(military) private"
      ],
      "tags": [
        "masculine"
      ],
      "topics": [
        "government",
        "military",
        "politics",
        "war"
      ]
    }
  ],
  "word": "soldado raso"
}

{
  "etymology_text": "raso indicates in this case \"having no rank, echelon, etc.\".",
  "forms": [
    {
      "form": "soldados rasos",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "soldado raso m (plural soldados rasos)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Spanish countable nouns",
        "Spanish entries with incorrect language header",
        "Spanish lemmas",
        "Spanish masculine nouns",
        "Spanish multiword terms",
        "Spanish nouns",
        "es:Military ranks"
      ],
      "glosses": [
        "private"
      ],
      "links": [
        [
          "military",
          "military"
        ],
        [
          "private",
          "private"
        ]
      ],
      "raw_glosses": [
        "(military) private"
      ],
      "tags": [
        "masculine"
      ],
      "topics": [
        "government",
        "military",
        "politics",
        "war"
      ]
    }
  ],
  "word": "soldado raso"
}