Battle of The Boyne - The Battle

The Battle

William had landed in Carrickfergus in Ulster on 14 June 1690 and marched south to take Dublin. James chose to place his line of defence on the River Boyne, around 30 miles (48 km) from Dublin. The Williamites reached the Boyne on 29 June. The day before the battle, William himself had a narrow escape when he was wounded in the shoulder by Jacobite artillery while surveying the fords over which his troops would cross the Boyne.

The battle itself was fought on 1 July for control of a ford on the Boyne near Drogheda, about 2.5 kilometres (1.6 mi) NW of the hamlet of Oldbridge (and about 1.5 kilometres (0.9 mi) WNW of the modern Boyne River Bridge). William sent about a quarter of his men to cross the river at Roughgrange, about 4 kilometres (2.5 mi) west of Donore and about 6 miles (9.7 km) SW of Oldbridge. The Duke of Schomberg's son, Meinhardt, led this crossing, which Irish dragoons in picquet under Neil O'Neill unsuccessfully opposed. James, an inexperienced general, thought that he might be outflanked and sent half his troops, along with most of his artillery, to counter this move. What neither side had realized was that there was a deep, swampy ravine at Roughgrange. Because of this ravine, the opposing forces there could not engage each other, but literally sat out the battle. The Williamite forces went on a long detour march which, later in the day, almost saw them cut off the Jacobite retreat at the village of Naul.

At the main ford near Oldbridge, William's infantry led by the elite Dutch Blue Guards forced their way across the river, using their superior firepower to slowly drive back the enemy foot-soldiers, but were pinned down when the Jacobite cavalry counter-attacked. Having secured the village of Oldbridge, some Williamite infantry tried to hold off successive cavalry attacks with disciplined volley fire, but were scattered and driven into the river, with the exception of the Blue Guards. William's second-in-command, the Duke of Schomberg, and George Walker were killed in this phase of the battle. The Williamites were not able to resume their advance until their own horsemen managed to cross the river and, after being badly mauled, managed to hold off the Jacobite cavalry until they retired and regrouped at Donore, where they once again put up stiff resistance before retiring.

The Jacobites retired in good order. William had a chance to trap them as they retreated across the River Nanny at Duleek, but his troops were held up by a successful rear-guard action.

The casualty figures of the battle were quite low for a battle of such a scale—of the 50,000 or so participants, about 2,000 died. Although three-quarters of them were Jacobites, William's army had far more wounded. At the time most of the casualties of battles tended to be inflicted in the pursuit of an already-beaten enemy; this did not happen at the Boyne, as the counter-attacks of the skilled Jacobite cavalry screened the retreat of the rest of their army. The Jacobites were badly demoralised by the order to retreat, which lost them the battle. Many of the Irish infantrymen deserted. The Williamites triumphantly marched into Dublin two days after the battle. The Jacobite army abandoned the city and marched to Limerick, behind the River Shannon, where they were unsuccessfully besieged.

After his defeat James did not stay in Dublin, but rode with a small escort to Duncannon and returned to exile in France, even though his army left the field relatively unscathed. James's loss of nerve and speedy exit from the battlefield enraged his Irish supporters, who fought on until the Treaty of Limerick in 1691; he was derisively nicknamed Seamus a' chaca ("James the shit") in Irish.