| Campaign of Sucre in Upper Peru | |
| Outcome: | Patriot victory |
The Campaign of Sucre in Upper Peru was a set of military operations conducted by the Liberator United Army of Peru to dislodge the Spanish royalists in Upper Peru or Charcas. They were started after the Battle of Ayacucho and concluded with the surrender of the last Royalist groups after the Battle of Tumusla on 1 April 1825.
On February 6 Marshal Sucre at the head of the Liberation Army crossed the Desaguadero River to occupy La Paz. General José María Córdova, with his Colombian division, stayed in La Paz for three months. Francisco Burdett O'Connor commanded the Division of Peru that invaded Upper Peru towards Potosí.
Royalist general Pedro Antonio Olañeta held out in Potosí. When he was informed of the defection of half of his forces under Col. Medinaceli, Olañeta attacked them on 1 April 1825. Olaneta was wounded in the Combat of Tumusla and fell to the ground. His soldiers surrendered. Olaneta died the following day, 2 April. That same day Col. Medinaceli informed Marshal Sucre of the result of the battle, who declared the military campaign as ended.