"in country" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "in country (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "American English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Military",
          "orig": "en:Military",
          "parents": [
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1992, Michael R. Conroy, Don't Tell America!",
          "text": "I was in country for four very nervous days before being issued a rifle and basic gear - no ammunition yet though.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "In combat in a foreign country, especially in Vietnam during the Vietnam War"
      ],
      "id": "en-in_country-en-adj-tdZJcsFv",
      "links": [
        [
          "military",
          "military"
        ],
        [
          "Vietnam",
          "Vietnam"
        ]
      ],
      "raw_glosses": [
        "(military, US) In combat in a foreign country, especially in Vietnam during the Vietnam War"
      ],
      "tags": [
        "US",
        "not-comparable"
      ],
      "topics": [
        "government",
        "military",
        "politics",
        "war"
      ]
    }
  ],
  "word": "in country"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "in country (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "American English",
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English terms with quotations",
        "English uncomparable adjectives",
        "en:Military"
      ],
      "examples": [
        {
          "ref": "1992, Michael R. Conroy, Don't Tell America!",
          "text": "I was in country for four very nervous days before being issued a rifle and basic gear - no ammunition yet though.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "In combat in a foreign country, especially in Vietnam during the Vietnam War"
      ],
      "links": [
        [
          "military",
          "military"
        ],
        [
          "Vietnam",
          "Vietnam"
        ]
      ],
      "raw_glosses": [
        "(military, US) In combat in a foreign country, especially in Vietnam during the Vietnam War"
      ],
      "tags": [
        "US",
        "not-comparable"
      ],
      "topics": [
        "government",
        "military",
        "politics",
        "war"
      ]
    }
  ],
  "word": "in country"
}