Franco-Spanish War: Turenne and the French army win a decisive victory over the Spanish at the battle of the Dunes.

The Franco-Spanish War, May 1635 to November 1659, was fought between France and Spain, each supported by various allies at different points. The first phase, beginning in May 1635 and ending with the 1648 Peace of Westphalia, is considered a related conflict of the Thirty Years' War, while the second continued until the Treaty of the Pyrenees in 1659.

Henri de La Tour d'Auvergne, vicomte de Turenne, commonly known as Turenne, was a French general and one of only six marshals to have been promoted Marshal General of France. The most illustrious member of the La Tour d'Auvergne family, his military exploits over his five-decade career earned him a reputation as one of the greatest military commanders in history.

The Battle of the Dunes, also known as the Battle of Dunkirk, took place on 14 June 1658, near the strategic port of Dunkirk in what was then the Spanish Netherlands. Part of the Franco-Spanish War and concurrent Anglo-Spanish War, a French army under Turenne, supported by troops from the Commonwealth of England, had besieged Dunkirk. Led by John of Austria the Younger and Louis, Grand Condé, a Spanish force supported by English Royalists and French Fronde rebels attempted to raise the siege but suffered a severe defeat.

June 14 is the 165th day of the year in the Gregorian calendar; 200 days remain until the end of the year.