| Conflict: | Sherman Expedition |
| Date: | August 1873 |
| Place: | Honduras |
| Result: | Honduran governmental victory [1] |
| Combatants Header: | Combatants |
| Combatant1: |  Honduras Supported by  Guatemala |
| Combatant2: | Guatemalan rebels Honduras rebels  Salvadorans RebelsSupported by  Costa Rica [2] |
| Commander1: | Celeo Arias Ricardo Streber Gregorio Solares |
| Commander2: | Enrique Palacios Carlos Alvarado |
The Expedition was an expedition made by Guatemalan, Salvadoran, and Honduran rebels supported by Costa Rica in an attempt to change the governments of Honduras and Guatemala in 1873.
The conservative party, defeated in Guatemala in 1871, organized a counter-revolution in 1873 with an expedition led by General Enrique Palacios aboard the General Sherman steamship. Their goal was to change the governments of Honduras and Guatemala by attempting to seize the port of Omoa. However, the small garrison at the castle in Omoa skillfully defeated them through a clever maneuver on August 7, 1873, forcing the expedition to hastily re-embark. [3]
Another part of the expedition, having entered the country through Puerto Cortés to San Pedro Sula, confronted General Gregorio Solares and his 600 Guatemalan troops entrenched north of the Chamelecón River, about two leagues from the city. On August 9 of the same year, the invading expedition, comprising 450 men, suffered a defeat with significant casualties, including General Casto Alvarado. This defeat rendered them incapable of further actions. [4]