Battle of Wagram
Fought on 5–6 July 1809 on the Marchfeld plain north-east of Vienna, the Battle of Wagram was the largest engagement of the Napoleonic Wars to that point, involving nearly 300,000 combatants over two days. Austria's Archduke Charles had rebuilt the Habsburg army after Austerlitz and mounted the most serious military challenge Napoleon had faced in four years. The first French crossing of the Danube at Aspern-Essling in May had ended in Napoleon's first clear battlefield defeat when Austrian resistance and a broken bridge cost him around 20,000 men. At Wagram, Napoleon re-crossed on a broader front with overwhelming numbers. After costly fighting on the first day, the second day's decisive moment came when Napoleon massed approximately 100 cannon in a grand battery that broke the Austrian centre as Marshal Davout enveloped their left flank. Archduke Charles ordered a retreat that preserved his army but conceded the field. French casualties were heavy — around 34,000 — far more than at Austerlitz, signalling the stiffening quality of enemy resistance. Austria signed the Treaty of Schonbrunn in October, ceding further territory and reducing its army to 150,000 men. Wagram was a French victory, but not the annihilating triumph of earlier years; it revealed that the margins were narrowing.
- Year: 1809 CE
- Category: Military
