During the Peninsular War, victory 22 July 1812 of the British led by the Duke of Wellington over the French under Marshal Auguste Marmont. The battle took place to the south of Salamanca, 170 km/105 mi northwest of Madrid.
The flag is modelled on the Stars and Stripes of the United States' flag. The stripes represent the nine provinces at the time of liberation. Blue and white are the colours of Argentina and also of national hero, José Gervasio Artigas. Effective date: 12 July 1830.