half
past twelve
The morning was misty , and Eugene 's advance reached the French pickets before they were perceived . Their difficulties now began . The rivulets were deep , the ground treacherous ; fascines had to be laid down , and the rivulets filled up , before guns could get over ; and even when across they could but feebly answer the French artillery , which from the higher ground commanded their whole line ; thus the allies lost 2000 men before Eugene got the army he commanded across the marshes . Then at half past twelve he sent word to Marlborough that he was ready . While the cannon roar had been incessant on their right , the main army remained motionless , and divine service was performed at the head of every regiment and squadron . The moment the aide-de-camp arrived with the news that Prince Eugene was in readiness , the artillery of Marlborough 's army opened fire , and the infantry , followed closely by their cavalry , advanced to the attack . The British division , under Lord Cutts , as the most trustworthy , had assigned to them a direct attack upon the strong position of Blenheim , and they advanced unwaveringly under a storm of fire , crossed the swamps and the Nebel , and advanced towards Blenheim .