"Einsatz group" meaning in English

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  "etymology_text": "Partial calque of German Einsatzgruppe.",
  "forms": [
    {
      "form": "Einsatz groups",
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  "lang_code": "en",
  "pos": "noun",
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          "word": "Einsatzgruppe"
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      "id": "en-Einsatz_group-en-noun-vVkMrvkQ",
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  "word": "Einsatz group"
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  ],
  "etymology_text": "Partial calque of German Einsatzgruppe.",
  "forms": [
    {
      "form": "Einsatz groups",
      "tags": [
        "plural"
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  "lang_code": "en",
  "pos": "noun",
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          "word": "Einsatzgruppe"
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  "word": "Einsatz group"
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