The Emperor of Russia perceived the danger, and directed a desperate attempt to be made upon Soult's division by the Russian Guards, for the purpose of restoring the communication with his left. The French infantry were staggered by this charge, and one regiment completely routed. But it was in such a crisis that the genius of Buonaparte triumphed. Bessières had orders to advance with the Imperial Guard, while the Russians were disordered with their own success. The encounter was desperate, and the Russians displayed the utmost valour before they at length gave way to the discipline and steadiness of Buonaparte's veterans. Their artillery and standards were lost, and Prince Constantine, the Emperor's brother, who fought gallantly at their head, was only saved by the speed of his horse. The centre of the French army now advanced to complete the victory, and the cavalry of Murat made repeated charges with such success, that the Emperors of Russia and Austria, from the heights of Austerlitz, beheld their centre and left completely defeated. The fate of the right wing could no longer be protracted, and it was disastrous even beyond the usual consequences of defeat.[161] They had been actively pressed during the whole battle by Lannes, but now the troops on their left being routed, they were surrounded on all sides, and, unable to make longer resistance, were forced down into a hollow, where they were exposed to the fire of twenty pieces of cannon. Many attempted to escape across a lake, which was partially frozen; but the ice proving too weak gave way under them, or was broken by the hostile cannonade. This fatality renewed, according to Buonaparte's description, the appearance of the battle with the Turks at Aboukir, where so many thousand men, flying from the battle, perished by drowning. It was with the greatest difficulty, that, rallying the remains of their routed forces around them, and retiring in the best manner they could, the Emperors effected their personal retreat. Only the devoted bravery of the Russians, and the loyalty of the Austrian cavalry, who charged repeatedly to protect the retrograde movement, could have rendered it possible, since the sole passage to the rear lay along a causeway, extending between two lakes. The retreat was, however, accomplished, and the Emperors escaped without sustaining the loss in the pursuit which might have been expected. But in the battle, at least twenty thousand men had remained, killed, wounded, and prisoners; and forty standards, with a great proportion of the hostile artillery, were the trophies of Napoleon, whose army had thus amply redeemed their pledge. It was, however, at a high rate that they had purchased the promised bouquet. Their own ranks had lost probably five thousand men, though the bulletin diminishes the numbers to two thousand five hundred.[162]