10/08/2026
In 1643, the Thirty Years’ War was still raging across Europe. Near Rocroi, a French army confronted the Spanish Army of Flanders in one of the most famous battles of the era. The Spanish relied on their legendary tercios—dense formations of pikemen and musketeers that had dominated European battlefields for generations. The French army used a more flexible combination of infantry, cavalry, and artillery. At first, the battle was balanced. French cavalry attacks were countered by Spanish formations, while both sides struggled for control of the battlefield. But the French gradually gained an advantage on the flanks. Their cavalry began attacking the Spanish formations from multiple directions while French infantry and artillery maintained pressure on the center. Several Spanish tercios resisted stubbornly even after the wider army began collapsing. Their final stand became legendary. Rocroi did not instantly end Spanish military power, but it became a powerful symbol of the changing balance in European warfare.