The Battle of San Carlos took place between the Luso-Brazilian forces under the command of Francisco das Chagas Santos and the Misionero forces led by Andrés Guazurary, popularly known as Andresito, in San Carlos, modern-day Argentina.

[1] After having been defeated by Andresito on the previous year, Francisco das Chagas Santos prepared for a new military campaign against the Misioneros, with a force of 800 men and 2 artillery pieces.

However, the column of Captain Arand that had the objective of helping the rebels was attacked by the invading army and crushed, having its commander been killed.

On the third day of battle, the buildings in which the rebels were caught fire, making their situation even more desperate and forcing them into submission, even though some men, including Andresito himself, managed to escape.

The battle resulted not only in a major victory for the Luso-Brazilians, but also to the de facto elimination of Andresito's threat to them.