| Conflict: | Battle of Sauce |
| Partof: | the Portuguese conquest of the Banda Oriental |
| Date: | 8 December 1816 |
| Place: | Arroyo Sauce, Uruguay |
| Result: | Federal League victory |
| Combatant1: | United Kingdom of Portugal, Brazil and the Algarves |
| Combatant2: | Federal League |
| Commander1: | Marshal Pinto de Araújo Correia |
| Commander2: | Pedro Gutierrez |
| Strength1: | 2000 men |
| Strength2: | Unknown |
| Casualties1: | 150 men |
| Casualties2: | Unknown |
The Battle of Sauce of 1816[1] [2] [3] took place between the Luso-Brazilian forces under the command of Pinto de Araújo Correia in Arroyo Oriental, modern-day Uruguay. The engagement resulted of the encounter between the Luso-Brazilian forces that had previously defeated the men of Fructuoso Rivera.
The orientals, led by Artiguist commander Pedro Gutierrez, attack by surprise and caused the Luso-Brazilian army to retreat, leaving 150 soldiers dead on the battlefield.