| Conflict: | First Honduran-Salvadoran War |
| Partof: | Honduran Wars |
| Date: | 1845 |
| Place: | Honduras and El Salvador |
| Result: | Status Quo Ante Bellum[1] [2] [3] [4] [5] [6] |
| Combatants Header: | Combatants |
| Combatant1: |  Honduras |
| Combatant2: |  El Salvador |
| Commander1: | Coronado Chavez Francisco Ferrera Jose Santos Guardiola |
| Commander2: | Joaquín Eufrasio Guzmán Jose Trinidad Cabañas Nicolás Angulo |
| Strength1: | 3,000 |
| Strength2: | 6,000 |
| Casualties1: | 600 killed and wounded |
| Casualties2: | Unknown but heavy |
The First Honduran-Salvadoran War was a military conflict between El Salvador and Honduras in 1845.
The Salvadoran government, aware of Honduran support for Malespín against Joaquín Eufrasio Guzmán, sought a peaceful resolution. Failed negotiations led to El Salvador questioning Honduras, escalating tensions. Despite attempts at peace, conflict preparations ensued, with General Cabañas leading Salvadoran forces. The situation intensified with the Chinameca agreement's rejection by the Honduran government.
In late May, General Cabañas invaded Honduras, reaching Comayagua. Salvadoran forces faced defeats in Comayagua, and Sensenti prompting Honduran invasion. President Guzmán declared a state of emergency. Battles ensued in, leading the Honduran occupation of Eastern part of El Salvador, the salvadoran victory in El Obrajuelo led to the Sempul Armistice, broken by the Honduran general Jose Santos Guardiola launching an offensive, capturing La Unión, and San Miguel. Finally he ended up withdrawing and ending the conflict with the Sensenti Peace Agreement on 27 November 1845.