Maurice, Prince of Orange

Maurice of Orange (Dutch: Maurits van Oranje; 14 November 1567 – 23 April 1625) was stadtholder of all the provinces of the Dutch Republic—except Friesland—from 1585 until his death. Prior to inheriting the title Prince of Orange from his elder half-brother, Philip William, in 1618, he was known as Maurice of Nassau.

Born in Dillenburg, Nassau, Maurice was educated at the Heidelberg University and the University of Leiden. He succeeded his father, William the Silent, as stadtholder of Holland and Zeeland in 1585, and later assumed the same position in Utrecht, Guelders, and Overijssel (1590), and Groningen (1620). As Captain-General and Admiral of the Union, Maurice reorganized the Dutch States Army, transforming the Dutch Revolt into a disciplined and effective military campaign.

Working alongside the Land's Advocate of Holland, Johan van Oldenbarnevelt, Maurice led a series of key victories that drove Spanish forces from much of the northern and eastern Netherlands. He gained wide recognition as one of the foremost military strategists of his time, particularly for his innovations in siege warfare and the development of a modern military drill system. He is widely credited with pioneering training methods that drew from classical principles outlined by Vegetius, forming the basis for early modern European armies.

During the Twelve Years' Truce (1609–1621), a theological and political conflict broke out within the Republic, culminating in a power struggle between Maurice and Oldenbarnevelt. The dispute ended with Oldenbarnevelt's arrest and execution by beheading in 1619, a controversial act that marked a shift in Maurice's political role. After the truce, his military campaigns saw little further success.

Maurice died in The Hague in 1625 without legitimate issue. He was succeeded by his half-brother, Frederick Henry. The island of Mauritius was named in his honor.