| Unit Name: | 21st Marching Regiment of Foreign Volunteers |
| Dates: | 1939 to 1940 |
| Allegiance: | French Foreign Legion |
| Branch: | French Army |
| Type: | Marching Regiment |
| Motto: | Servir (To Serve) |
| Battles: | Battle of France |
The 21st Marching Regiment of Foreign Volunteers was a formation of the French Foreign Legion from 1939 to June 26, 1940.
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In order to serve France, foreign volunteers formed the regiment in 1939.[1]