These popular movements, however, could not be regarded with indifference by him who had witnessed and appreciated the character of the Spanish insurrection. Napoleon well knew, that unless he concluded the main contest soon, the spirit of Schill and Hofer would kindle a general flame from the Rhine to the Elbe; and he therefore desired fervently that the Austrian generalissimo might be tempted to quit the fastnesses of Bohemia, and try once more the fortune of a battle.
The Archduke, having re-established the order and recruited the numbers of his army, had anticipated these wishes of his enemy, and was already posted on the opposite bank of the Danube, which river, being greatly swollen, and all the bridges destroyed, seemed to divide the two camps, as by an impassable barrier.
Napoleon determined to pass it; and after an unsuccessful attempt at Nussdorff, met with better fortune at Ebersdorff, where the river is broad and intersected by a number of low and woody islands, the largest of which bears the name of Lobau. On these islands Napoleon established the greater part of his army, on the 19th of May, and on the following day made good his passage, by means of a bridge of boats, to the left bank of the Danube; where he took possession of the villages of Asperne and Essling, with so little show of opposition, that it became evident the Archduke wished the inevitable battle to take place with the river between his enemy and Vienna.
On the 21st, at daybreak, the Archduke appeared on a rising ground, separated from the French position by an extensive plain; his whole force divided into five heavy columns, and protected by not less than 200 pieces of artillery. The battle began at four p.m., with a furious assault on the village of Asperne; which was taken and retaken several times, and remained at nightfall in the occupation, partly of the French, and partly of the assailants, who had established themselves in the church and churchyard. Essling sustained three attacks also; but there the French remained in complete possession. Night interrupted the action; the Austrians exulting in their partial success; Napoleon surprised that he should not have been wholly victorious. On either side the carnage had been terrible, and the pathways of the villages were literally choked with the dead.
Next morning the battle recommenced with equal fury; the French recovered the church of Asperne; but the Austrian right wing renewed their assaults on that point with more and more vigour, and in such numbers, that Napoleon guessed the centre and left had been weakened for the purpose of strengthening the right. Upon this he instantly moved such masses, en échelon, on the Austrian centre, that the Archduke's line was shaken; and for a moment it seemed as if victory was secure.
At this critical moment, by means of Austrian fireships suddenly sent down the swollen and rapid river, the bridge connecting the island of Lobau with the right bank was wholly swept away. Buonaparte perceived that if he wished to preserve his communications with the right of the Danube, where his reserve still lay, he must instantly fall back on Lobau; and no sooner did his troops commence their backward movement, than the Austrians recovered their order and zeal, charged in turn and finally made themselves masters of Asperne. Essling, where Massena commanded, held firm, and under the protection of that village and numerous batteries erected near it, Napoleon succeeded in withdrawing his whole force during the night. On the morning of the 23rd the French were cooped up in Lobau and the adjacant islands—Asperne, Essling, the whole left bank of the river, remaining in the possession of the Austrians. On either side a great victory was claimed; and with equal injustice. But the situation of the French Emperor was imminently hazardous: he was separated from Davoust and his reserve; and had the enemy either attacked him in the islands, or passed the river higher up, and so overwhelmed Davoust and relieved Vienna, the results might have been fatal. But the Archduke's loss in these two days had been great; and, in place of risking any offensive movement, he contented himself with strengthening the position of Asperne and Essling, and awaiting quietly the moment when his enemy should choose to attempt once more the passage to the left bank, and the re-occupation of these hardly contested villages.
Napoleon availed himself of this pause with his usual skill. That he had been checked was true, and that the news would be heard with enthusiasm through Germany he well knew. It was necessary to revive the tarnished magic of his name by another decisive battle: and he made every exertion to prepare for it. Some weeks, however, elapsed ere he ventured to resume the offensive. On the 4th of July he had at last re-established thoroughly his communication with the right bank, and arranged the means of passing to the left at a point where the Archduke had made hardly any preparation for receiving him. The Austrians, having rashly calculated that Asperne and Essling must needs be the objects of the next contest as of the preceding, were taken almost unawares by his appearance in another quarter. They changed their line on the instant; and occupied a position, the centre and key of which was the little town of Wagram.
Here, on the 6th of July, the final and decisive battle was fought. The Archduke had extended his line over too wide a space; and this old error enabled Napoleon to ruin him by his old device of pouring the full shock of his strength on the centre. The action was long and bloody: at its close there remained 20,000 prisoners, besides all the artillery and baggage, in the hands of Napoleon. The Archduke fled in great confusion as far as Znaim, in Moravia. The Imperial Council perceived that further resistance was vain: an armistice was agreed to at Znaim; and Napoleon, returning to Schoenbrunn, continued occupied with the negotiation until October.
In this fierce campaign none more distinguished himself than Lannes, Duke of Montebello. At Ratisbonne he headed in person the storming party, exclaiming, "Soldiers, your general has not forgotten that he was once a grenadier." At the battle of Asperne his exertions were extraordinary. He was struck, towards the close of the day, by a cannon-shot, which carried off both his legs. The surgeons, on examining the wound, declared it mortal. He answered them with angry imprecations, and called with frantic vehemence for the Emperor. Napoleon came up, and witnessed the agonies of the dying marshal, who blasphemed heaven and earth that he should be denied to see the end of the campaign. Thus fell Lannes, whom, for his romantic valour, the French soldiery delighted to call the Roland of the camp.
The war, meanwhile, had been pursued with mixed fortune in the Peninsula. Zaragossa, after sustaining another siege with fortitude not unworthy of the first, was at length compelled to surrender in the month of February. Sir Arthur Wellesley, being restored to the command of the British army in Portugal, landed at Lisbon on the 22nd of April, and immediately marched upon Oporto, which Soult had occupied early in the year. Soult was defeated under the walls of the town, and forthwith began his retreat towards Galicia, which he effected under circumstances as miserable as had attended Sir John Moore's march on Coruña in the preceding campaign. Sir Arthur was prevented from urging the pursuit of Soult by the intelligence that Marshal Victor was laying Andalusia waste, being opposed only by Cuesta, a bigoted old general, and an army which had lost heart by repeated disasters. The English leader perceived that if he marched into Galicia, Victor must possess the means of instantly re-occupying Portugal; and resolved, in place of following Soult, to advance towards this more formidable enemy. He effected a junction with Cuesta at Oropesa, on the 20th of July, and marched along the Tagus towards the position of Victor. He, however, having a force at least double that of Wellesley, assumed the offensive, and attacked the allies, on the 28th, at Talaveyra de la Reyna. The battle ended in the total defeat and repulsion of Victor; but Wellesley found it impossible to advance further into Spain, because Ney, Soult and Mortier were assembling their divisions, with the view of coming between him and Portugal. The English retired, therefore, to Badajos, and thence to the Portuguese frontier.