Capitulation of Ulm
Summary
The capitulation of Ulm ended the strategic encirclement orchestrated by Napoleon. Austrian General Karl Mack surrendered with nearly 27,000 men without a real battle, trapped by the Grande Armée's speed of maneuver.
Historical context
After a series of rapid victories (Wertingen, Elchingen, etc.), Napoleon succeeded in encircling the Austrian army at Ulm. Deprived of Russian reinforcements and lines of retreat, Mack capitulated after a tight blockade.
Tactics
Napoleon set an envelopment trap: the Grande Armée cut retreat routes, controlled the bridges, and pushed Mack to lock himself in Ulm. On 20 October, 25,000 Austrians capitulated after a brief bombardment, with only 500 French dead.
Consequences
The collapse of the Austrian army at Ulm opened the road to Vienna for the French. This strategic victory neutralized an entire army without a major engagement, reinforcing Napoleon's military prestige.