At 0730 the 44th (Lowland) Infantry Brigade and the 46th (Highland) Infantry Brigade of the 15th (Scottish) Infantry Division, supported by the 31st Tank Brigade moved off their start lines behind a rolling barrage fired from 344 guns. The 46th Brigade initially advanced without armoured support, because in bypassing the mine and booby trap-ridden village of Le Mesnil-Patry, its tanks were forced to negotiate minefields flanking the village. The 2nd Battalion, Glasgow Highlanders faced only light resistance, while the 9th Battalion The Cameronians, ran into the grenadiers of the 12th SS Panzer Division, who had allowed the barrage to pass over their positions before opening fire. Reuniting with their tanks at around 1000, by midday the two battalions were fighting for control of their initial objectives; Cheux and Le Haut du Bosq.