The Battle of Gembloux took place at Gembloux, near Namur, Low Countries, between the Spanish forces led by Don John of Austria (Spanish: Don Juan de Austria), Governor-General of the Spanish Netherlands, and a rebel army composed of Dutch, Flemish, English, Scottish, German, French, and Walloon soldiers under Antoine de Goignies, during the Eighty Years' War and the Anglo-Spanish War (1585–1604). On 31 January 1578 the Spanish cavalry commanded by John's nephew, Don Alexander Farnese, Prince of Parma (Italian: Alessandro Farnese, Spanish: Alejandro Farnesio), after pushing back the Netherlandish cavalry, attacked the Netherlandish army, causing an enormous panic amongst the rebel troops. The result was a crushing victory for the Spanish forces. The battle hastened the disintegration of the unity of the rebel provinces, and meant the end of the Union of Brussels.