Andrés del Valle Rodríguez (30 November 1833 – 28 June 1888) was President of El Salvador from February 1st until May 1st, 1876.
His father Fernando del Valle was born in Santander and had made his fortune in trade and agriculture. Andrés del Valle was a member of the constitutional assembly from 1872 until 1873. In 1874 he became senator for the Santa Ana Department. In 1875, he was vice-chairman of the Senate and chairman of the parliament. On March 1st 1875 the parliament called for elections on the first Sunday of December that year.
Andres was elected for the administration between February 1st 1876 and February 1st 1880. His vice-president was the predecessor, Santiago Gonzalez Portillo. A government loan of a half a million USD was enforced on the same day.
Justo Rufino Barrios Auyón, then president of Guatemala, was skeptical, because Santiago Gonzales supported political refugees from Guatemala. He also suspected Ponciano Leiva from Honduras to be planning to overthrow him.
Barrios let Valle know, that in case he planned to continue this course, he would see to it that the Guatemalan government would support José María Medina from Honduras in overthrowing Ponciano Leiva.
The government of El Salvador insisted on Gonzalez's goodwill and a conference at the Volcán Chingo was agreed on, at which, with mediation of Marco Aurelio Soto Martínez, an agreement was signed.
Barrios was convinced, Gonzalez remained the actual head of state in El Salvador and insinuated him holding public speeches, as well as committing hypocrisy and treason.
Barrios let 1.500 soldiers attack Honduras and led an army himself, which entered Salvador without a declaration of war from the West.
On March 20th 1876 the Guatemalan Secretary of War, Jose Maria Samayoa, declared all official relations with El Salvador as terminated, asserted that on March 27th 1876 troops from El Salvador had invaded Guatemala, declared war and gave Barrio absolute power for defending Guatemala's dignity. On March 26th 1876, the government of El Salvador declared the Friendliness- and Support act closed with Guatemala on January 24th 1872 for void. Barrio's plan was to directly attack El Salvador from the West, from Guatemala with one of his armies and, at the same time attack the Departments of San Miguel and La Union from the East, through Honduras. At that time, Mexican General Jose Lopez Uraga was stationed at camp Jutiapa to guard the arsenal there. The troops were unsuccessfully attacking an isolated station on the border from El Salvador, which led Barrios to pass orders to Uraga to move the equipment to Chingo, whilst himself commencing the attack on El Salvador. Barrios held Chalcuapa in garrison. The headquarters of El Salvador was in Santa Ana. Barrios besieged Ahuachapan with approx. 8000 soldiers, Uraga led approx. 1500 soldiers in Chalchuapa and only a handful of soldiers remained in Chingo.