The Battle of Aspern-Essling (21-22 May 1809) was a major battle of the Napoleonic Wars (1803-1815). It saw an Austrian Army under Archduke Charles defeat a French army led by Emperor Napoleon I (r. 1804-1814; 1815) as it attempted to cross the Danube River near Vienna. The battle marked Napoleon's first major defeat in ten years. [image:17687] A New Austrian Army In December 1805, Austria...