Franco-Dutch War

The Franco-Dutch War lasted from 1672 to 1678, with France and the Dutch Republic as the main combatants. Each side drew support from shifting coalitions. This conflict also sparked the Third Anglo-Dutch War (1672–1674) and the Scanian War (1675–1679). In May 1672, France came close to conquering the Netherlands, a catastrophe the Dutch call the Rampjaar, or "Disaster Year." By late July, however, the situation had steadied.

Origins

Fears of French expansion brought the Dutch aid from Emperor Leopold I, Spain, and Brandenburg-Prussia. England, which had been allied with France, pulled out of the war in February 1674. Facing a grinding multi-front war, Louis XIV of France shifted his strategy to fortifying French borders in the Spanish Netherlands and the Rhineland. Meanwhile, a coalition led by William of Orange worked to limit any territorial losses.

By 1677, France had taken Franche-Comté and made gains in the Spanish Netherlands and Alsace, yet neither side could deliver a knockout blow. France never managed to conquer the Dutch Republic. Still, the Peace of Nijmegen, signed in September 1678, is often considered the peak of French power in this era.

Spain got back Charleroi from France but gave up Franche-Comté, along with large parts of Artois and Hainaut. Under William of Orange, the Dutch recovered all the land they had lost at the start of the war, which made him the dominant figure in Dutch politics. This position later helped him forge the anti-French Grand Alliance that fought in the Nine Years' War (1688–1697) and the War of the Spanish Succession (1701–1714). France had backed the Dutch Republic during the Eighty Years War (1568–1648) as part of a broader effort to counter Habsburg power in Europe.

The 1648 Peace of Münster confirmed Dutch independence and permanently closed the Scheldt estuary, which boosted Amsterdam by eliminating its rival Antwerp. Keeping that monopoly was a Dutch priority, but it increasingly clashed with French goals in the Spanish Netherlands, where France wanted to reopen Antwerp. When William II of Orange died in 1650, the Republic entered the First Stadtholderless Period. Political power fell to the urban patricians, or Regenten, which maximized the influence of the States of Holland and Amsterdam—the power base of Johan de Witt, Grand Pensionary from 1653 to 1672.

De Witt saw his relationship with Louis XIV as vital for preserving Dutch economic strength, and also for protecting himself from his domestic Orangist opponents. France and the Republic signed an assistance treaty in 1662, but the States of Holland refused to back a partition of the Spanish Netherlands. This convinced Louis that he could only achieve his aims by force.

The Dutch got only limited French support during the Second Anglo-Dutch War (1665–1667), and they increasingly preferred a weak Spain as a neighbor over a strong France. Shortly after talks to end the Anglo-Dutch War began in May 1667, Louis launched the War of Devolution, quickly occupying most of the Spanish Netherlands and Franche-Comté. In July, the Treaty of Breda ended the Anglo-Dutch War, leading to talks between the Dutch and England’s Charles II about forming a common diplomatic front against France. Spain and Emperor Leopold, also worried by French expansion, backed this idea.

After Louis rejected Charles’s first suggestion of an Anglo-French alliance, Charles entered the 1668 Triple Alliance, which linked England, the Republic, and Sweden. When the Alliance mediated between France and Spain, Louis gave back many of his gains in the 1668 Treaty of Aix-la-Chapelle. Although Breda and Aix-la-Chapelle looked like Dutch diplomatic victories, they also carried serious risks. De Witt himself understood these dangers but could not convince his colleagues.

Louis saw the January 1668 Partition Treaty with Leopold as confirmation of his claim to the Spanish Netherlands—a point reinforced by Aix-la-Chapelle, despite his concessions. He no longer felt the need to negotiate and decided that the best way to acquire those lands was to defeat the Republic first. The Dutch also overestimated their own strength. Their defeat at Lowestoft in 1665 exposed weaknesses in their navy and federal command system, while the successful Raid on the Medway owed more to English financial troubles than to Dutch power.

In 1667, the Dutch States Navy was at its peak, but that advantage quickly faded as England and France expanded their own fleets. The Anglo-Dutch War had been fought mostly at sea, which masked the poor state of the Dutch army and forts—both had been deliberately neglected because they were seen as strengthening the Prince of Orange. To prepare for an attack on the Republic, Louis launched a series of diplomatic moves. The first was the 1670 Secret Treaty of Dover, an Anglo-French alliance against the Dutch.

It contained secret clauses, not revealed until 1771, including a payment of £230,000 per year to Charles II in exchange for a British brigade of 6,000 troops. Agreements with the Bishopric of Münster and the Electorate of Cologne let French forces bypass the Spanish Netherlands by attacking through the Bishopric of Liège, then a dependency of Cologne. Preparations wrapped up in April 1672, when Charles XI of Sweden accepted French subsidies in return for invading parts of Pomerania claimed by Brandenburg-Prussia.

Preparations

French armies of the era held clear advantages over their opponents: unified command, talented generals like Turenne, Condé, and Luxembourg, and far superior logistics. Reforms introduced by Louvois, the Secretary of War, helped maintain large field armies that could be mobilized much faster. This meant the French could launch offensives in early spring, before their enemies were ready, seize their objectives, and then shift to a defensive posture. As in other wars of the period, the army’s size fluctuated; it started with 180,000 men in 1672, and by 1678 it had...