The Swiss-born Major-General Louis de Watteville was appointed commander of the Montreal District on 17 September. In response to reports of the American advance, he ordered several units of militia called up. Reinforcements (two battalions of the Royal Marines) were also moving up the St. Lawrence from Quebec. The Governor-General of Canada, Lieutenant General Sir George Prevost, ordered Lieutenant Colonel George MacDonnell to move from Kingston on Lake Ontario to the front south of Montreal with his 1st Light Battalion of mixed regular and militia companies. Already though, the commander of the outposts, Lieutenant Colonel Charles de Salaberry, had been organising his defences. In addition to his own corps (the Canadian Voltigeurs) and George MacDonnell's 1st Light Battalion, he had called in several units of the Select Embodied Militia and local militia units.