The action of Tambo Nuevo, also known as Hazaña de los Tres Sargentos was a successful cavalry raid carried out between 23 and 25 October 1813, during the second Upper Peru campaign of the Argentine War of Independence, by a small detachment of dragoons of the Army of the North.

After the defeat of General Manuel Belgrano in the battle of Vilcapugio, on 1 October 1813, the bulk of the republican Army of the North withdrawn to the east, establishing its headquarters in the town of Macha.

General Joaquin de la Pezuela lost more than 200 men in Vilcapugio,[1] along with a good number of mules and horses, the main way of carrying artillery and other provisions through the rugged soil.

[2] By mid-October, Potosí was threaten from the north by a royalist squadron, led by Colonel Saturnino Castro, who seized the town of Yocalla.

Only a troop of local natives, loyal to Pezuela, harassed La Madrid's group during their retreat along the defile of Tinguipaya, and informed Castro about his path through the mountains.

[7] La Madrid learned that Castro, aware of the route and movements of the Dragoons due to his local informers, had ordered a company to mount an ambush on the outpost of Tambo Nuevo, a mountain pass 25 km north of Yocalla.

La Madrid cavalry reached the site of the battle of Vilcapugio, where he buried the corpses of several of his camarades fallen there.