Azincourt
The Battlefield of Agincourt
On 25 October 1415, an English army under Henry V defeated a numerically stronger French force here, during the Hundred Years' War.

From the source
Slagveld bij Azincourt (Frankrijk), waar op 25 oktober 1415 een Engels leger onder Hendrik V een numeriek sterkere Franse troepenmacht versloeg.
Editorial reading
The battlefield lies in present-day Pas-de-Calais, France. The date is confirmed by the Musee de l'Armee, the French army museum. No French equivalent of the British Registered Battlefields register has been found for this site.
Recommendation
One of the most cited English victories of the Hundred Years' War, fought against a French force described as numerically superior.