Portuguese Restoration War: Having crossed the Minho and entered Portuguese territory, a Spanish army was victorious in the Battle of Vilanova.

The Restoration War, historically known as the Acclamation War, was the war between Portugal and Spain that began with the Portuguese revolution of 1640 and ended with the Treaty of Lisbon in 1668, bringing a formal end to the Iberian Union.

The Minho or Miño is the longest river in the autonomous community of Galicia in Spain, with a length of 340 kilometres (210 mi). It forms a part of the international border between Spain and Portugal. By discharge volume, it is the fourth largest river of the Iberian Peninsula after the Douro, Ebro, and Tagus rivers.

The Battle of Vilanova took place on 17 September 1658 during the Portuguese Restoration War near the Fort of São Luis de Gonzaga, located south of Tui in the southern bank of the Minho River. A Spanish army commanded by the Governor of Galicia, Rodrigo Pimentel, Marquis of Viana, entered Portuguese territory and confronted a Portuguese army led by João Rodrigues de Vasconcelos e Sousa, 2nd Count of Castelo Melhor. The Spanish were victorious and proceeded over the following months to capture Monção, Salvaterra de Miño and other Portuguese strongholds.