All wars of the 20th century
- Wars of the 20th century book
- Major wars of 20th century
- Deadliest wars of the 20th century
- Biggest wars of the 20th century
- Civil wars of the 20th century
- Us wars of the 20th century
- Bloodiest wars of the 20th century
- British wars of the 20th century
- Largest wars of the 20th century
- European wars of the 20th century
- World wars of the 20th century