Johan de Witt in the context of "William II, Prince of Orange"

In Dutch history, the year 1672 is referred to as the Rampjaar (Dutch: [ˈrɑmpjaːr] ; Disaster Year). In May 1672, following the outbreak of the Franco-Dutch War and its peripheral conflict the Third Anglo-Dutch War, France, supported by Münster and Cologne, invaded and nearly overran the Dutch Republic. At the same time, it faced the threat of an English naval blockade in support of the French endeavor, though that attempt was abandoned following the Battle of Solebay. A Dutch saying coined that year describes the Dutch people as redeloos ("irrational"), its government as radeloos ("distraught"), and the country as reddeloos ("beyond salvation"). The cities of the coastal provinces of Holland, Zealand and Frisia underwent a political transition: the city governments were taken over by Orangists, opposed to the republican regime of the Grand Pensionary Johan de Witt, ending the First Stadtholderless Period.

By late July however, the Dutch position had stabilised, with support from Holy Roman Emperor Leopold I, Brandenburg-Prussia, and Spain; this was formalised in the August 1673 Treaty of the Hague, which Denmark joined in January 1674. Following further defeats at sea at the hands of the Dutch navy, the English, whose parliament was suspicious of King Charles's motives in his alliance with France, and with Charles himself wary of French domination of the Spanish Netherlands, settled a peace with the Dutch republic in the Treaty of Westminster in 1674. With England, Cologne, and Münster having made peace with the Dutch and with the war expanding into the Rhineland and Spain, French troops withdrew from the Dutch Republic, retaining only Grave and Maastricht. To offset these setbacks, Swedish forces in Swedish Pomerania attacked Brandenburg-Prussia in December 1674 after Louis threatened to withhold their subsidies; this sparked Swedish involvement in the 1675–1679 Scanian War and the Swedish-Brandenburg War whereby the Swedish army tied up the armies of Brandenburg and some minor German principalities plus the Danish army in the north.

The Royal Netherlands Marine Corps (Dutch: Korps Mariniers) is the elite naval infantry corps of the Royal Netherlands Navy, one of the four Armed Forces of the Kingdom of the Netherlands. The marines trace their origins to the establishment of the Regiment de Marine on 10 December 1665, by the then grand pensionary of the Dutch Republic, Johan de Witt and famous Admiral Michiel de Ruyter. It is the second-oldest still-active marine corps in the world.

The present-day Corps is a rapid reaction force that can be deployed to any location in the world within a maximum of 48 hours. The marines are capable of operating in all environments and climates, specialising in expeditionary warfare, amphibious warfare, arctic warfare and mountain warfare. The core fighting element of the corps consists of two battalion-sized Marine Combat Groups (MCGs) which are supplemented by various combat support and combat service support squadrons. In addition, the Netherlands Maritime Special Operations Forces (NLMARSOF) are capable of conducting the full spectrum of special operations.

Cornelis Sebille Roos or Cornelis Roos (1754 – 1820) was a Dutch art dealer and inspector of the Nationale Konst-Gallery collection in Huis ten Bosch during the years 1799-1801

Roos was born 10 January 1754 in Amsterdam and baptized six days later in the Walloon church. He became a drawing teacher and manager of Felix Meritis, which he helped found. In 1798 he lived in the left-hand side of the Trippenhuis where he started his art dealership. Many of the paintings he originally purchased have found their way into the collection of the Rijksmuseum. He was friends with Jan Gildemeester and attended the estate sale of his art collection, buying many pieces there that later found their way in the Huis ten Bosch collection. The most notable of these was The Threatened Swan by Jan Asselijn, which became the first painting purchased by the director of the Nationale Konst-Gallery, Alexander Gogel. The painting, which is not dated, was painted before the events which caused it to be marked. It was marked to make it a political allegory of the patriot hero Johan de Witt who was murdered by orangists. Since Roos was known for his patriotic politics, it is quite possible that he marked the painting himself when he bought it in 1800, though the estate sale catalog already mentions that it is an allegory of Johan de Witt.

Cornelis de Witt (15 June 1623 – 20 August 1672) was a Dutch States Navy officer and statesman. During the First Stadtholderless Period, De Witt was an influential member of the Dutch States Party, and was in opposition to the House of Orange. In the Rampjaar of 1672 he was lynched together with his brother Johan de Witt by a crowd incited by Orangist partisans.

The First Stadtholderless Period (1650–72; Dutch: Eerste Stadhouderloze Tijdperk) was the period in the history of the Dutch Republic in which the office of Stadtholder was vacant in five of the seven Dutch provinces (the provinces of Friesland and Groningen, however, retained their customary stadtholder from the cadet branch of the House of Orange). It coincided with the zenith of the Golden Age of the Republic.

The term has acquired a negative connotation in 19th-century Orangist Dutch historiography, but whether such a negative view is justified is debatable. Republicans argue that the Dutch state functioned very well under the regime of Grand Pensionary Johan de Witt, despite the fact that it was forced to fight two major wars with England, and several minor wars with other European powers. Thanks to friendly relations with France, a cessation of hostilities with Spain, and the relative weakness of other European great powers, the Republic for a while was able to play a pivotal role in the "European Concert" of nations, even imposing a pax nederlandica in the Scandinavian area. A convenient war with Portugal enabled the Dutch East India Company to take over the remnants of the Portuguese Empire in Ceylon and South India. After the end of the war with Spain in 1648, and the attendant end of the Spanish embargo on trade with the Republic that had favored the English, Dutch commerce swept everything before it, in the Iberian Peninsula, the Mediterranean Sea and the Levant, as well as in the Baltic region. Dutch industry, especially textiles, was as yet not hindered by protectionism. As a consequence, the Republic's economy enjoyed its last great economic boom.