Three days after his ragged army of Venezuelan and New Granadan patriots crushed royalist forces at the Battle of Boyacá, Simón Bolívar entered Bogotá to jubilant crowds, having liberated the viceregal capital with barely a shot fired in its defense. The victory secured independence for what would become Colombia and set Bolívar on the path toward liberating Ecuador, Peru, and Bolivia.
Bolívar's campaign to Boyacá was one of military history's great gambles. He had led his army across the flooded páramo of the Andes, a freezing high-altitude wetland where dozens of soldiers, many of them shoeless plainsmen unaccustomed to the cold, died of exposure before a single battle was fought.
The gamble paid off spectacularly. Catching the royalist army under José María Barreiro by surprise at the Boyacá River on August 7, Bolívar's forces killed or captured nearly the entire opposing army in a matter of hours, opening the road to Bogotá completely undefended.
When Bolívar rode into the city, the Viceroy had already fled, and residents lined the streets to welcome him as a liberator rather than a conqueror. The victory transformed Bolívar from a persistent rebel commander into the founding father of an independent Gran Colombia, and it set the momentum that would carry his armies south through the Andes to complete the liberation of Ecuador, Peru, and Bolivia over the following six years.