The Battle of La Gudina or Battle of Val Gudina (Spanish: Batalla de La Gudiña) (Portuguese: Batalha de Caia) was fought on 7 May 1709 near Arronches between the Spanish Bourbon army of Extremadura, under the Marquis de Bay, and the Portuguese and British, under the Huguenot Earl of Galway and the Marquis of Fronteira. This battle resulted in a crushing defeat for the Anglo-Portuguese army, 4,000-5,000 soldiers were killed, wounded or captured, while the Spanish had only 400 soldiers dead or wounded.