The battlefield of Wagram is located in modern Austria. The battle was fought on 5–6 July 1809 across the Marchfeld plain, northeast of Vienna, during the War of the Fifth Coalition.
Napoleon’s French and allied army faced the Austrian army commanded by Archduke Charles. After crossing the Danube, Napoleon committed more than 150,000 troops in a huge two-day engagement. The fighting was exceptionally destructive because the flat terrain allowed both sides to deploy large formations and masses of artillery.
Wagram ended in a costly French victory and persuaded Austria to seek peace. The resulting Treaty of Schönbrunn weakened the Austrian Empire and temporarily secured Napoleon’s dominance in central Europe. A common mix-up is confusing Wagram with Austerlitz, another major Napoleonic victory against Austria, which took place in 1805 near present-day Slavkov u Brna in the Czech Republic.