12 July 1691
The battle itself
Roughly 25,000 Williamite and Jacobite troops met near Aughrim. The Jacobites were drawn up on high ground near the village of Aughrim. The Williamites, commanded by Godert de Ginkell, attacked across marshy terrain. The battle lasted about three hours. By late afternoon, the Jacobite lines had broken. Casualties were enormous: an estimated 7,000 dead on both sides, making it the bloodiest battle on Irish soil. The Jacobite commander Patrick Sarsfield escaped but was mortally wounded at the River Shannon a few weeks later.
Ireland's future
The stakes
The Williamite War was fought between supporters of the deposed Catholic King James II and supporters of the Protestant William of Orange. For Ireland, the outcome meant confiscation of Catholic lands, restriction of Catholic rights, and the Penal Laws — legislation that crippled the Catholic population for more than a century. A Jacobite victory would have reversed those outcomes. Instead, the defeat at Aughrim sealed them. The battle was a hinge moment, one of the few points where history could have pivoted.
De Ginkell and Sarsfield
The generals
Godert de Ginkell commanded the Williamite forces with a military competence that Sarsfield, despite his courage, could not match. De Ginkell was a professional soldier, experienced in continental warfare. Sarsfield was a cavalry officer of great courage but outmatched tactically. After the battle, Sarsfield led a cavalry charge that achieved little. He withdrew and eventually crossed the Shannon, where he was shot by a cannonball days later. Legend says his dying words were: 'Would that this were for France.'
Why Aughrim
The ground itself
The battlefield is roughly six kilometres south of the village, on open rolling country. The Jacobites held the high ground but were committed to it — they had to fight on ground they chose because they could not afford to retreat. The Williamites had to advance across bad terrain and broken ground to dislodge them. This made for a brutal, grinding engagement rather than a swift victory. But the Williamites had superior numbers, better discipline, and better artillery. By late afternoon, the Jacobite lines broke entirely.