Argentine Confederation forces, led by Juan Manuel de Rosas, were attacked by a combined Anglo-French fleet.

Although the attackers broke through Argentine defenses and routed Rosas' forces, the heavy losses they suffered proved that foreign ships could not safely navigate Argentina's internal waters against its government's wishes.

The battle also changed political attitudes toward the Argentine Confederation among other South American nations by increasing support for Rosas and his regime.

[2] The Peronist government did not endorse openly the historical revisionism of the history of Argentina (which sought to modify the mainstream perspectives over Juan Manuel de Rosas), but it allowed public manifestations of it.

[5] Law 20.769 was proposed to both repatriate the body of Rosas and create a Day of National Sovereignty by Senator Cornejo Linares.

[citation needed] The new holiday was first celebrated in 2010 at Obligado, the site of the battle, in an act with the presence of the president, revisionist historian Pacho O'Donnell and other politicians.