| 释义 |
- See also
21st Battalion may refer to: - 21st Battalion (Australia), a World War I ANZAC battalion
- 2/21st Battalion (Australia), a World War II Australian infantry battalion
- 21st Battalion (New Zealand), a World War II New Zealand infantry battalion
- 21st Battalion (Eastern Ontario), CEF, a World War I battalion that formed part of the Canadian Corps
- 21st Battalion, London Regiment (First Surrey Rifles)
See also- XXI Corps (disambiguation)
- 21st Division (disambiguation)
- 21st Brigade (disambiguation)
- 21st Regiment (disambiguation)
- 21st Squadron (disambiguation)
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