The Regiment O'Reilly passed the night on the field of battle, which was lost by the Austrians. The market town of Aspern, on the north side of the Danube, was destroyed, and the loss of the Imperialists was frightful. After a two days' conflict, there lay on that field the flower of the Austrian army; 87 field-officers, 4199 subalterns and privates, 12 generals (including the Prince de Rohan), 663 officers, and 15,651 soldiers were wounded; of these, Field-Marshal Webber, with 8 officers, and 329 men were taken prisoners, with 3 pieces of cannon, 7 powder waggons, 17,000 muskets, and 3000 corslets. The loss of the French was terrible! 7000 men and an immense number of horses were buried on the field; 29,773 wounded men strewed the streets and suburbs of Vienna; hundreds of corpses, gashed and shattered, floated down the rapid Danube and were flung upon its shores, where they lay unburied and decaying, filling the air with pestilence and the place with horror. In October peace was signed at the camp of Schoenbrunn, and, divorcing the woman who had loved him when he had only his sword and his epaulettes, Napoleon espoused Maria Louisa of Austria; and Prince Charles, who by his accumulated blunders at the battle of Aspern, had thrown away the fortunes of Continental Europe, received from his Imperial conqueror the Grand Riband of the Legion of Honour. O'Reilly came in for a full share of the honours and decorations which were showered upon the Austrian army. At the general peace of 1814 the Empire, exhausted by a war of five-and-twenty years, reduced her vast military establishments to 58 regiments of the line, 12 battalions of chasseurs, and 5 garrison battalions--in all, 1044 companies of fusiliers, and 116 of grenadiers. The cavalry were reduced to 36 regiments of cuirassiers, light dragoons, uhlans and hussars. Of the third regiment of light horse O'Reilly was colonel and proprietor. He was also High Chamberlain of the Empire. At this time Louis Count Taaffe, a noble of Irish parentage, was Second President of the Austrian High Court of Justice, and General Count O'Donnel was Military Governor of Austrian Lombardy. One of the Emperor's most distinguished officers was General Count Nugent, who in the war of 1847-8 led 30,000 Austrian infantry to succour Marshal Radetzki, who was then opposed to the troops of Charles Albert.[19] Count Taaffe was a member of the new ministry formed on the 21st of March, in the year of the Austrian revolution: but he retired from office shortly before the appearance of the chartered constitution on the 19th of April.