Remaining in Ireland until 1703, the Devonshires then joined John Churchill, the Duke of Marlborough's, army in Holland, where they assisted to capture the fortress of Huy and the city of Limburg, then held by the Spaniards. The Regiment's next campaign was in Portugal in 1705, and, after a visit to England, again in 1708.
The year 1709 was a memorable year for the Devons, as they were again in Holland and with the Duke of Marlborough's forces, taking part in the siege of Mons. While working in the trenches within one hundred yards of the French palisades, the Regiment was attacked by a strong force of the enemy. The grenadiers, who were protecting the working party, were thrown into confusion by the attack. Nothing daunted, the soldiers of the Regiment threw down their picks and spades, drew their swords and counter-attacked with such vigour that the French were driven back over the palisades of Mons, with severe losses. Some of the soldiers of the 11th even followed the enemy over the palisades into the fortified town. During the attack and counter-attack the Regiment sustained 160 casualties. For some twelve months the 11th Foot was engaged in operations against fortified towns on the French Belgian border: Douai, Béthune, Aire, and St. Venant.
In 1711 the 11th formed part of the unsuccessful expedition against the French in Canada.
Except in 1715 and 1719, where the 11th gave a good account of itself in Scotland, the Regiment's history is uneventful for some thirty years. In 1719 Spanish troops landed in Ross-shire, and were joined by the Scottish clans of the neighbourhood. The 11th formed part of a small force which, charging with the bayonet, dispersed Spaniards and Highlanders, won the Battle of Glenshiel, and broke the insurrection.