Who was the Grand Duke of Alba and Iron Duke in the Netherlands that defeated William the Silent's invading army?
Fernando Álvarez de Toledo, 3rd Duke of Alba Fernando Álvarez de Toledo y Pimentel (29 October 150711 December 1582), known as the Grand Duke of Alba in Spain and the Iron Duke in the Netherlands, was a Spanish noble, general, and diplomat. He was titled the 3rd Duke of Alba de Tormes, 4th Marquis of Coria, 3rd Count of Salvatierra de Tormes, 2nd Count of Piedrahita, 8th Lord of Valdecorneja, Grandee of Spain, and a Knight of the Order of the Golden Fleece. His motto in Latin was "Deo patrum Nostrorum", which in English means "To the God of our fathers".
Dutch States Army The Dutch States Army (Dutch: "Staatse leger" ) was the army of the Dutch Republic. It was usually called this, because it was formally the army of the States-General of the Netherlands, the sovereign power of that federal republic. This mercenary army was brought to such a size and state of readiness that it was able to hold its own against the armies of the major European powers of the extended 17th century, Habsburg Spain and the France of Louis XIV, despite the fact that these powers possessed far larger military resources than the Republic. It played a major role in the Eighty Years' War (opposite the Spanish Army of Flanders) and in the wars of the Grand Alliance with France after 1672.