Perhaps the best known is the Siege at Dien Bin Phu although the French have served well and honarably all over the world since that 1954 disaster.
Saint-Lô, Verdun, Crecy, and Arras all were the site of a major battle in varried wars.
themselves... it was a civil war
Dien Bein Phu
Quebec
The Battle of Dunkirk in 1940
The Preparations for the Battle of Britain
The RAF's Importance In the Battle Of Britain
French Surrender and the Final Solution in 1940