While the pursuers struggled in the mire and aimed wildly through the pelting haze, the British rearguard raced for safety.  Says Captain Mercer of the artillery:  “We galloped for our lives through the storm, striving to gain the hamlets, Lord Uxbridge urging us on, crying ’Make haste; for God’s sake gallop, or you will be taken.’"[501] Gaining on the pursuit, they reached Genappe, and, filing over its bridge and up the narrow street, prepared to check the French.  At this time the Emperor galloped up, drenched to the skin, his gray overcoat streaming with rain, his hat bent out of all shape by the storm.[502] He was once more the artillery officer of Toulon.  “Fire on them,” he shouted to his gunners, “they are English.”  A sharp skirmish ensued, in which our 7th Hussars, charging down into the village, were worsted by the French lancers, “an arm,” says Cotton, “with which we were quite unacquainted.”  In their retreat they were saved by the Life Guards, whose weight and strength carried all before them.

At last, on the ridge of Waterloo, Wellington’s force turned at bay.  Napoleon, coming up at 6.30 to the brow of the opposite slope, ordered a strong force to advance into the sodden clay of the valley.  It was promptly torn by a heavy cannonade; and the truth was borne in on him that the British had escaped him for that day.

NAPOLEON’S HEALTH IN THE WATERLOO CAMPAIGN

As many writers assert that Napoleon at this time was but the shadow of his former self, we must briefly review the evidence of contemporaries on this subject; for if the assertion be true, the Battle of Waterloo deserves little notice.

It seems that for some time past there had been a slight falling off in his mental and bodily powers; but when it began and how far it progressed is matter of doubt.  Some observers, including Chaptal, date it from the hardships of the retreat from Moscow.  This is very doubtful.  He ended that campaign in a better state of health than he had enjoyed during the advance.  Besides, in none of his wars did he show such vitality and fertility of resource as in the desperate struggle of 1814, which Wellington pronounced his masterpiece.  After this there seems to have been a period of something like relapse at Elba.  In September, 1814, Sir Neil Campbell reported:  “Napoleon seems to have lost all habits of study and sedentary application.  He occasionally falls into a state of inactivity never known before, and sometimes reposes in his bedroom of late for several hours in the day; takes exercise in a carriage and not on horseback.  His health excellent and his spirits not at all depressed” ("F.O.,” France, No. 114).  During his ten months at Elba he became very stout and his cheeks puffy.