Battle of Aspern-Essling
In the Battle of Aspern-Essling (21–22 May 1809), Napoleon attempted a forced crossing of the Danube near Vienna, but the French and their allies were driven back by the Austrians under Archduke Charles. The battle was the first time Napoleon had been personally defeated in over a decade. However, Archduke Charles failed to secure a decisive victory as Napoleon was able to successfully withdraw most of his forces.