The battle demonstrated Argentina's resistance to Anglo-French commercial and political intervention in the Río de la Plata region.
Key Facts
- Date
- 20 November 1845
- River
- Paraná River, right bank
- Argentine commander
- General Lucio Norberto Mansilla
- Buenos Aires governor
- Brigadier Juan Manuel de Rosas
- Opposing forces
- Anglo-French joint naval squadron
Location
Cause → Event → Consequence
Britain and France sought to open direct trade routes with the Argentine interior provinces of Santa Fe, Entre Ríos, and Corrientes, bypassing Buenos Aires and refusing to recognize Rosas' authority over the Confederation's foreign relations. Under the pretext of mediating between Buenos Aires and Montevideo, they dispatched a joint naval squadron up the Paraná River.
On 20 November 1845, an Anglo-French squadron engaged Argentine defense forces under General Lucio Norberto Mansilla at a narrow bend in the Paraná River called Vuelta de Obligado, in the province of Buenos Aires. The Argentine forces, loyal to Governor Juan Manuel de Rosas, attempted to block the river passage against the superior European fleet.
Despite the military defeat of the Argentine defenders, the battle became a symbol of resistance to foreign intervention. Rosas' defiance forced the British and French to eventually recognize Argentine sovereignty over the river, leading to the withdrawal of the blockade and diplomatic settlements that largely preserved Rosas' control over foreign commerce.
Belligerents & Mobilization Analysis
Side A
1 belligerent
General Lucio Norberto Mansilla, Juan Manuel de Rosas (governor).
Side B
1 belligerent