sentences:  On 25 February 1746, the garrison began demolishing buildings in the nearby village of Maryburgh to provide a clear field of fire, although they could not prevent the besiegers occupying the surrounding heights.The Jacobite force from Fort Augustus consisted of 150 French regulars under Colonel Stapleton, plus clansmen led by Lochiel and MacDonald of Keppoch.The Jacobites blockaded Loch Linnhe at the Corran Narrows, capturing one of "Baltimore"'s boats and threatening to cut connection between the garrison and the outside world.