In the next ten days a series of combats broke the Austrian army, drove the Archduke Charles, with his main force, north of the Danube, and opened the road to Vienna to the French. On the 12th of May, one month from the day he left Paris, Napoleon wrote from Schönbrunn, “We are masters of Vienna.” The city had been evacuated.
Napoleon lay on the right bank of the Danube; the Austrian army under the Archduke Charles was coming towards the city by the left bank; it was to be a hand-to-hand struggle under the walls of Vienna. The emperor was uncertain of the archduke’s plans, but he was determined that he should not have a chance to reënforce his army. The battle must be fought at once, and he prepared to go across the river to attack him. The place of crossing he chose was south of Vienna, where the large island Lobau divides the stream. Bridges had to be built for the passage, and it was with the greatest difficulty that the work was accomplished, for the river was high and the current swift, and anchors and boats were scarce. Again and again the boats broke apart. Nevertheless, about thirty thousand of the French got over, and took possession of the villages of Aspern and Essling, where they were attacked on May 21st by some eighty thousand Austrians.
BATTLE OF WAGRAM.
This picture, by Horace Vernet, was first exhibited in the Salon of 1836. It now hangs in the Hall of Battles at Versailles.
The battle which followed lasted all day, and the French sustained themselves heroically. That night reënforcements were gotten over, so that the next day some fifty-five thousand men were on the French side. Napoleon fought with the greatest obstinacy, hoping that another division would soon succeed in getting over, and would enable him to overcome the superior numbers of the Austrians. Already the battle was becoming a hand-to-hand fight, when the terrible news came that the bridge over the Danube had gone down. The Austrians had sent floating down the swollen river great mills, fire-boats, and masses of timber fastened together in such a way as to become battering-rams of frightful power when carried by the rapid stream. All hope of aid was gone, and, as the news spread, the army resigned itself to perish sword in hand. The carnage which followed was horrible. Towards evening one of the bravest of the French marshals, Lannes, was fatally wounded. It seemed as if fortune had determined on the loss of the French, and Napoleon decided to retreat to the island of Lobau, where he felt sure that he could maintain his position, and secure supplies from the army on the right bank, until he had time to build bridges and unite his forces.
Communications were soon established with the right bank, but the isle of Lobau was not deserted; it was used, in fact, as a camp for the next few weeks, while Napoleon was sending to Italy, to France, and to Germany, for new troops. A heavy reënforcement came to him from Italy with news which did much to encourage him. When the war began, an Austrian army had invaded Italy, and at first had success in its engagements against the French under the Viceroy of Italy, Eugène de Beauharnais. The news of the ill-luck of the Austrians at home, and of the march on Vienna, had discouraged the leader, Archduke John, brother of Archduke Charles, and he had retreated, Eugène following. Such were the successes of the French on this retreat, that the Austrians finally retired out of their way, leaving them a free route to Vienna, and Eugène soon united his army to that of the emperor.
With the greatest rapidity the French now secured and strengthened their communications with Italy and with France, and gathered troops about Vienna. The whole month of June was passed in this way, hostile Europe repeating the while that Napoleon was shut in by the Austrians and could not move, and that he was idling his time in luxury at the castle of Schönbrunn, where he had established his headquarters. But this month of apparent inactivity was only a feint. By the 1st of July the French Army had reached one hundred and fifty thousand men. They were in admirable condition, well drilled, fresh, and confident. Their communications were strong, their camps good, and they were eager for battle.
The Austrians were encamped at Wagram, to the north of the Danube. They had fortified the banks opposite the island of Lobau in a manner which they believed would prevent the French from attempting a passage; but in arranging their fortification they had completely neglected a certain portion of the bank on which Napoleon seemed to have no designs. But this was the point, naturally, which Napoleon chose for his passage, and on the night of July 4th he effected it. On the morning of the 5th his whole army of one hundred and fifty thousand men, with four hundred batteries, was on the left bank. In the midst of a terrible storm this great mass of men, with all its equipments, had crossed the main Danube, several islands and channels, had built six bridges, and by daybreak had arranged itself in order. It was an unheard-of feat.
Pushing his corps forward, and easily sweeping out of his way the advance posts, Napoleon soon had his line facing that of the Austrians, which stretched from near the Danube to a point east of Wagram. At seven o’clock on the evening of July 5th the French attacked the left and centre of the enemy, but without driving them from their position. The next morning it was the Archduke Charles who took the offensive, making a movement which changed the whole battle. He attacked the French left, which was nearest the river, with fifty thousand men, intending to get on their line of communication and destroy the bridges across the Danube. The troops on the French centre were obliged to hurry off to prevent this, and the army was weakened for a moment, but not long. Napoleon determined to make the Archduke Charles, who in person commanded this attack on the French left, return, not by following him, but by breaking his centre; and he turned his heavy batteries against this portion of the army, and followed them by a cavalry attack, which routed the enemy. At the same time their left was broken, and the troops which had been engaging it were free to hurry off against the Austrian right, which was trying to reach the bridges, and which were being held in check with difficulty at Essling. As soon as the archduke saw what had happened to his left and centre he retired, preferring to preserve as much as possible of his army in good order. The French did not pursue. The battle had cost them too heavily. But if the Austrians escaped from Wagram with their army, and if their opponents gained little more than the name of a victory, they were too discouraged to continue the war, and the emperor sued for peace.