From Crookshank's 1762 description of the battle
"They (the Covenanters) were scarce formed in this manner when an alarm came that a body of men was approaching them; they found it was Dalziel's van, which had cut through a ridge in the Pentland hills, and came upon them undiscovered, til they were within a quarter of a mile, upon a hill over against them. Colonel Wallace upon this sent Captain Arnot, who repulsed Lieutenant General Drummond, who was sent by the General (Dalziel) with a select party to begin the attack ...... When the Lieutenant General was driven back, there was no small confusion among Dalziel's army, of whom not a few threw down their arms. Major Lamont made the second attack, and repulsed the enemy; Duke Hamilton narrowly escaping. The last encounter was after sunset, when the General's foot, flanked with their horse upon all hands, overpowered the Colonel's little army, and routed them"