Laghtnan's Regiment (400 men) Manus O'Cahan's Regiment (200) James McDonnell's Regiment (200) MacDonald, Cameron and other clan levies (c.500) Patrick Graham of Inchbrackie's Regiment (200) Sir Thomas Ogilvie's Horse (50) Covenanter (Sir Duncan Campbell, 2nd Baronet of Auchinbreck) Marquess of Argyll's Regiment (500) Clan Campbell levies (c.1000) Lt-Col Laghlan Roughe's Battalion (200) Lt-Col John Cockburn's Battalion (200) Argyll did not stay for the battle, having injured his arm in a fall from his horse, and retired to his galley anchored on Loch Linnhe. Command of the government forces was left in the hands of his kinsman Sir Duncan Campbell of Auchinbreck, described by Robert Baillie as "a stout soldier, but a very vicious man". Auchinbreck was an experienced veteran recently recalled from the war in Ireland and regarded as the best soldier in Clan Campbell. Auchinbreck lined up his forces with the left wing anchored on Inverlochy Castle, which he reinforced with 200 musketeers to protect his left flank. In the centre he placed Argyll's regiment, with an advance guard commanded by Gillespie, son of the Laird of Bingingeahds. On the flanks he put the 8 companies of Lowland militia sent by Baillie, under Roughe and Cockburn, while to the rear was a reserve of Campbell clan levies commanded by the lairds of Lochnell and Rarra, along with two light artillery pieces. Unlike at Tippermuir and Aberdeen, where Montrose had annihilated hastily conscripted and poorly trained militias, many of the troops he faced at Inverlochy were veterans of the wars in England and Ireland. Montrose lined his army up only two lines deep to avoid being outflanked, placing the clansmen, under his personal command, in the centre with the Irish on the flanks, the left being commanded by MacColla and the right by O'Cahan. A small troop of light cavalry, led by Sir Thomas Ogilvie of Airlie, protected the Royalist standard. Attack by Montrose The fight did not start straight away and instead skirmishes broke out along the line before dawn. This was possibly because Montrose wanted to harry Argyll's men to ensure they did not slip away, whilst hiding his own presence and the full size of his army. Auchinbreck and his officers thought that they were only fighting one of Montrose's lieutenants and not the man himself, believing he was still far up the glen. Wishart, Montrose's biographer, claimed that they only realised Montrose and his cavalry were