War of the Oranges
Owing to its proximity to the border with Spain, over the years Portalegre endured many invasions by foreign troops. In 1704, during the War of the Spanish Succession, it was attacked and conquered by the army of Felipe V; again in 1801 during the War of the Oranges, it surrendered to the Spanish Army, in an attempt to counter the French dominion. In 1847 it was occupied by forces of the Spanish General Concha.