| Part Of: | the Paraguayan War |
| Date: | October 21, 1867 |
| Place: | Tatayibá, Paraguay |
| Result: | Brazilian victory |
| Combatant1: |  Paraguay |
| Commander1: | Bernardino Caballero |
| Commander2: | Marquess of Caxias |
| Strength1: | 1,500 cavalry[1] |
| Strength2: | 5,000 cavalry |
| Casualties1: | 761: 583 killed 178 captured |
| Casualties2: | 123: 10 killed 113 wounded |
| Conflict: | Battle of Tatayibá |
The Battle of Tatayibá was a cavalry engagement between a Paraguayan force led by future president Bernardino Caballero and a Brazilian force led by Luís Alves de Lima e Silva, then Marquis of Caxias. The Brazilians, outnumbering the Paraguayans nearly 3 to 2, were victorious.
A trap was set by the Brazilian cavalry in order to stop the daily sorties by Lt. Col. Caballero's Paraguayan cavalry. Hiding their main force in the woods, a few Brazilians lured the Paraguayan cavalry on a three-mile chase. The Paraguayans were surrounded at Tatayibá, with only a few making it back to Humaitá. Caballero was promoted to colonel and a medal ordered for his survivors.[1]