After taking part in these services the regiment marched to Breda: during the severe frosts of winter it proceeded to Bergen-op-Zoom, to reinforce the garrison of that fortress, and afterwards returned to Breda, from whence it detached three hundred men to Maestricht, to join the garrison of that city, while the Dutch soldiers were working at the entrenchments on the heights of Petersberg.
Meanwhile the united French and Bavarian armies had gained considerable advantage in Germany, and the Duke of Marlborough resolved to lead his British brigades from the ocean to the Danube, to rescue the Emperor of Germany from the menaced danger. To engage in this splendid undertaking, the ROYAL IRISH regiment marched from Breda on the 5th of May, N.S., and proceeded towards the Rhine; being joined at Bedburg by the detachment from Maestricht. Continuing its route, the regiment proceeded to Coblentz, where it passed the Moselle and the Rhine, and afterwards traversed the minor states of Germany towards the seat of war on the Danube; all Europe being surprised at the ability evinced by the British commander in conducting this daring enterprise.
Having united with the forces of the Empire, the British advanced on the 2nd of July to attack a body of French and Bavarians under Count d'Arco, in an entrenched camp on the heights of _Schellenberg_, on the left bank of the Danube. About six in the evening the leading division, of which a detachment of the ROYAL IRISH regiment formed part, moved forward under a heavy fire, and attacked the enemy's entrenchments with distinguished gallantry. The enemy made a determined resistance, and the assailants were repulsed; but the attack was renewed with heroic courage, and, after a protracted contest, the Germans co-operated in the attack, when the entrenchments were forced, and the French and Bavarians driven from the heights with great slaughter. The British cavalry, charging, completed the discomfiture of the enemy, and sixteen pieces of ordnance, a number of standards and colours, with the enemy's tents, and the equipage and plate of the Count d'Arco, were captured.
The regiment had one serjeant and eleven rank and file killed; Captain Lea, Ensigns Gilman, Walsh, and Pensant, three serjeants, and thirty-two rank and file wounded.[21]