Three of the companies and the head-quarters of the 1st battalion in Canada were withdrawn from St. John's in April, 1813, to Montreal, where two other companies also arrived from Quebec. Soon afterwards an attack on the American post at _Sackett's Harbour_, on Lake Ontario, was resolved upon; and 2 serjeants and 25 rank and file of the ROYAL SCOTS were placed under the orders of Colonel Baynes, to take part in this service. The grenadier company was also ordered from Chambly to engage in the expedition; but before its arrival, the other troops sailed from Kingston, and, having effected a landing on the 29th of May, advanced with great gallantry along a causeway connecting the island with the main land, dashed into a thick wood, and, encountering the Americans, drove them from amongst the trees. The detachment afterwards set fire to the American storehouses near the fort, and retired. The ROYAL SCOTS had 2 private men killed, 7 wounded, and 1 taken prisoner by the enemy, in this service. During the same month, the light company of the ROYAL SCOTS was sent from Chambly to Kingston, for the purpose of instructing the flank companies of the Canada militia regiments, which had been formed into a light battalion, in light infantry drill. On the 4th of June the head-quarters and one company arrived at Kingston, from Montreal; on the 17th seven companies advanced to Four-Mile Creek; and on the following day two companies embarked from Kingston, under the command of Lieut.-Colonel Gordon, to attack a strong post occupied by the Americans at _Sodius_. The detachment made good its landing on the 20th of June, captured a great quantity of stores, and burnt the public buildings; and re-embarking on the same day, sailed to Four-Mile Creek; having sustained a loss of 3 private men killed, and 1 serjeant and 3 private men wounded. While the battalion lay at _Four-Mile Creek_, frequent skirmishes occurred between the British and Americans; and on the 12th of August the ROYAL SCOTS had several private men wounded. From Four-Mile Creek the battalion proceeded to St. David's, and went into cantonments at that place until the 1st of September, when it marched to _Cross-roads_, and was there partially engaged with a body of Americans, but experienced little loss. The battalion encamped a short time at Cross-roads; and on the 8th of October some sharp fighting took place, in which the ROYAL SCOTS had 5 private men wounded, and 1 taken prisoner. On the 11th the battalion went into quarters at Burlington.