The Regiment Huzaren Prins van Oranje is an armoured regiment of the Royal Netherlands Army, named after Prince Willem, Prince of Orange, eldest son of King Willem II. The regiment serves as part of 43 Gemechaniseerde (Mechanized) Brigade operating the Leopard 2 main battle tank. It was raised in 1815 as a militia carabiniers regiment, and changed into a cuirassiers regiment (Regiment Cuirassiers nr. 9) in 1816. It fought with distinction against the Belgians during the Ten Day Campaign (Tiendaagse Veldtocht) in August 1831. In 1841, it was transformed into a Dragoon regiment (2nd Dragoon Regiment), followed by another transformation in 1867, when it became the 2nd Hussar Regiment. Several squadrons fought during the Nazi-invasion of May 1940 near Geertruidenberg en Keizersveer, preventing