The Beresina at length was reached. This river must be crossed. But the frightful chill, which hitherto had pursued the fleeing host, now inopportunely decreased, a thaw broke the frozen surface of the stream, and the fugitives gazed with horror on masses of floating ice where they had dreamed of a solid pathway for their feet. The slippery state of the banks added to the difficulty, while on the opposite side a Russian army commanded the passage with its artillery, and in the rear the roar of cannon signalled the approach of another army. All seemed lost, and only the good fortune which had so often befriended him now saved Napoleon and his host. For at this critical moment a fresh army corps, which had been left behind in his advance, came to the emperor's aid, and the Russian general who disputed the passage, deceived by the French movements, withdrew to another point on the stream. Taking instant advantage of the opportunity, Napoleon threw two bridges across the river, over which the able-bodied men of the army safely made their way. After them came the vast host of non-combatants that formed the rear, choking the bridges with their multitude. As they struggled to cross, the pursuing Russian army appeared and opened with artillery upon the helpless mass, ploughing long red lanes of carnage through its midst. One bridge broke down, and all rushed to the other. Multitudes were forced into the stream, while the Russian cannon played remorselessly upon the struggling and drowning mass. For two days the passage had continued, and on the morning of the third a considerable number of sick and wounded soldiers, sutlers, women, and children still remained behind, when word reached them that the bridges were to be burned. A fearful rush now took place. Some succeeded in crossing, but the fire ran rapidly along the timbers, and the despairing multitude leaped into the icy river or sought to plunge through the mounting flames. When the ice thawed in the spring twelve thousand dead bodies were found on the shores of the stream. Sixteen thousand of the fugitives remained prisoners in Russian hands. This day of disaster was the climax of the frightful retreat. But as the army pressed onward the temperature again fell, until it reached twenty-seven degrees below zero, and the old story of "frozen to death" was resumed. Napoleon, fearing to be taken prisoner in Germany if the truth should become known, left his army on December 5, and hurried towards Paris with all speed, leaving the news of the disaster behind in his flight. Wilna was soon after reached by the army, but could not be held by the exhausted troops, and, with its crowded magazines and the wealth in its treasury, fell into the hands of the Russians.