How Napoleon won a decisive campaign without fighting a single major battle.
In 1805, Napoleon trapped an entire Austrian army near Ulm, forcing a surrender of 25,000 men with minimal French casualties. By executing a massive strategic wheel, the French neutralized 60,000 Austrians in under 15 days, proving that superior movement can render tactical combat entirely unnecessary for victory.
The Ulm campaign serves as a masterclass in strategic maneuver. In 1805, the Third Coalition—comprising the United Kingdom, Austria, Sweden, and Russia—aimed to contain French expansion. The Austrian commander, Karl Freiherr Mack von Leiberich, prematurely invaded Bavaria, expecting the main conflict to unfold in northern Italy. He positioned his 72,000-man army near Ulm, anticipating that Napoleon would advance through the Black Forest and waiting for Russian reinforcements to arrive.
Napoleon, however, shifted the theater of war to Germany. While Mack waited, the Grande Armée, numbering roughly 210,000, crossed the Rhine and executed a rapid, wide-ranging wheel. By screening his movements with cavalry, Napoleon crossed the Danube at points like Donauwörth and Ingolstadt, effectively cutting off Mack’s lines of retreat before the Austrian commander realized the danger. As the French net tightened, smaller engagements at Wertingen, Günzburg, and Elchingen systematically dismantled Austrian resistance.
By 16 October, Napoleon had fully surrounded the Austrian forces at Ulm. Facing an impossible situation with Russian troops still roughly 100 miles away, Mack surrendered on 20 October. The result was a lopsided triumph: while French losses were insignificant, the Austrians lost tens of thousands of soldiers to capture or death. Napoleon’s ability to force a surrender through positioning rather than a direct tactical clash remains a foundational study in military schools, influencing later strategies like the Schlieffen Plan.
Source: Battle of Ulm
