Aspern and Essling were (are) located
right across the Danube from Vienna.
France, led by the man,
Napoleon I Bonaparte,
himself, against Austria.
led by Archduke Charles, won.
French commander of the cavalry was
Marshal Jean-Baptiste Bessières, the Duc d'Istrie.
Also fighting on the French side was
Marshal André Masséna, the Duc de Rivoli.
The Battle of Aspern-Essling was
Napoleon's first defeat, which didn't sit well with him and Napoleon
came back with a vengeance a few days later to kick rear at the
Battle of Wagram, which was
located just a couple of minutes north of Aspern and Essling.
And here is the map of the Battle of Aspern-Essling, as well as a
Google map of the same spot for comparison.
Click map to enlarge