During the next six weeks the Highland army was employed in detachments against the enemies who surrounded them on all sides. Lord John Drummond took Fort Augustus, Lochiel and others besieged--but in vain--the more strongly defended Fort William. Lord Cromarty pursued Lord Loudon into Sutherland. But the most notable and gallant feat of arms was performed by Lord George Murray. He marched a body of his own Athol men, and another of Macphersons under Cluny--700 men in all--down into his native district of Athol. At nightfall they started from Dalwhinnie, before midnight they were at Dalnaspidal, no one but the two leaders having any idea of the object of the expedition. It was the middle of March; at that season they might count on five hours of darkness before daybreak. It was then explained to the men that they were to break up into some thirty small companies, and each was to march to attack one of the English garrisons placed in all the considerable houses in the neighbourhood. It was necessary that each place should be attacked at the same time, that the alarm might not spread. By daybreak all were to reassemble at the Falls of Bruar, within a mile or two of Castle Blair. One after the other the small parties moved off swiftly and silently in the darkness, one marching some ten miles off to the house of Faskally, others attacking Lude, Kinnachin, Blairfettie, and many other houses where the English garrisons were sleeping in security. Meanwhile Lord George and Cluny, with five-and-twenty men and a few elderly gentlemen, went straight to the Falls of Bruar. In the grey of the morning a man from the village of Blair came up hastily with the news that Sir Andrew Agnew had got the alarm, and with several hundred men was scouring the neighbourhood and was now advancing towards the Falls! Lord George might easily have escaped up the pass, but if he failed to be at the rendezvous, each small body as it came in would be surrounded and overpowered by the enemy. The skilful general employed precisely the same ruse as had been so successful at the Rout of Moy.
He put his followers behind a turf wall at distant intervals, displayed the colours in a conspicuous place, and placed his pipers to advantage. As Sir Andrew came in sight, the sun rose, and was flashed back by brandished broadswords behind the turf wall. All along the line plaids seemed to be waving, and heads appeared and disappeared as if a large body of men were behind; while the pipes blew up a clamorous pibroch, and thirty men shouted for three hundred. Sir Andrew fell into the snare, and promptly marched his men back again. One by one the other parties came in: some thirty houses had yielded to them, and they brought three hundred prisoners with them.