In August 1308, Douglas met the king for a joint attack on the MacDougalls of Lorn, kinsmen of the Comyns, the climax to Bruce's campaign in the north. Two years before, the Macdougalls had intercepted and mauled the royal army at the Battle of Dalrigh. Now they awaited the arrival of their opponents in the narrow Pass of Brander, between Ben Cruachan and Loch Awe in Argyllshire. While Bruce pinned down the enemy in a frontal advance through the pass, Douglas, completely unobserved, led a party of loyal Highlanders further up the mountain, launching a surprise attack from the rear. Soon the Battle of Pass of Brander turned into a rout. Returning south soon after, Douglas joined with Edward Bruce, the king's brother, in a successful assault on Rutherglen castle near Glasgow, going on to a further campaign in Galloway.