1747
From Scotland, the regiment was again removed to the theatre of the war in the Netherlands, where it arrived in time to take part in the operations of the campaign of 1747; and it was engaged at the battle of Val, on the 2nd of July. On this occasion the allied army was very inferior in numbers to the enemy, and although the gallantry of the British infantry was very conspicuous throughout the action, the Duke of Cumberland was obliged to order a retreat to Maestricht.
Eight rank and file of the ROYAL NORTH BRITISH FUSILIERS were killed; one serjeant and fifteen rank and file were wounded; and five men missing.
1748
The regiment was again in the field in the summer of 1748. Hostilities were this year terminated by the treaty of Aix-la-Chapelle, and during the winter the regiment returned to England.[7]
1751
In the Royal Warrant, issued on the 1st of July, 1751, for ensuring uniformity in the clothing, standards, and colours of the army, the following directions are given for the TWENTY-FIRST REGIMENT, OR THE ROYAL NORTH BRITISH FUSILIERS:—
"In the centre of their colours, the THISTLE within the CIRCLE OF ST. ANDREW, and the CROWN over it; and in the three corners of the second colour, the KING'S CIPHER AND CROWN.
"On the grenadier caps, the THISTLE as on the colours; the WHITE HORSE, and motto over it, Nec aspera terrent, on the flap. On the drums and bells of arms, the THISTLE and CROWN to be painted, as on the colours, with the rank of the regiment underneath."
During the period the regiment was stationed in England, where it remained until 1751, it received the commendations of His Royal Highness the Duke of Cumberland, on account of its good conduct in quarters, and of its former gallantry in the field.