"Dad's Army" meaning in English

{
  "etymology_text": "After Dad's Army, a BBC television sitcom about the British Home Guard during the Second World War.",
  "head_templates": [
    {
      "args": {
        "head": "Dad's Army"
      },
      "expansion": "Dad's Army",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Organizations",
          "orig": "en:Organizations",
          "parents": [
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The Territorial Army."
      ],
      "id": "en-Dad's_Army-en-name-ALekN3mF",
      "links": [
        [
          "Territorial Army",
          "Territorial Army"
        ]
      ],
      "raw_glosses": [
        "(UK, slang) The Territorial Army."
      ],
      "tags": [
        "UK",
        "slang"
      ],
      "wikipedia": [
        "Dad's Army"
      ]
    }
  ],
  "word": "Dad's Army"
}

{
  "etymology_text": "After Dad's Army, a BBC television sitcom about the British Home Guard during the Second World War.",
  "head_templates": [
    {
      "args": {
        "head": "Dad's Army"
      },
      "expansion": "Dad's Army",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "British English",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English proper nouns",
        "English slang",
        "English terms with non-redundant non-automated sortkeys",
        "English uncountable nouns",
        "en:Organizations"
      ],
      "glosses": [
        "The Territorial Army."
      ],
      "links": [
        [
          "Territorial Army",
          "Territorial Army"
        ]
      ],
      "raw_glosses": [
        "(UK, slang) The Territorial Army."
      ],
      "tags": [
        "UK",
        "slang"
      ],
      "wikipedia": [
        "Dad's Army"
      ]
    }
  ],
  "word": "Dad's Army"
}