Aycinena y Carrillo was a Colonel in the Spanish Army and was in command of the "Milicias de Infantería" (Infantry Militias). On 5 November 1811, 400 Salvadorans lead by José Matías Delgado and Manuel José Arce in the Intendancy of San Salvador declared independence and overthrew its Colonial Intendant, Antonio Gutiérrez y Ulloa. Gutiérrez y Ulloa was replaced by José Mariano Batres y Asturias by the independence leaders. Aycinena y Carrillo was sent into San Salvador to crush the rebellion. On 3 December 1811, after suppressing the independence movement, Aycinena y Carrillo became the Colonial Intendant of San Salvador to bring "tranquility and betterment" to the intendancy. His term as Colonial Intendant ended in August 1812 when he was elected as Advisor of the State of the Real Audiencia of Guatemala, being replaced by José María Peinado y Pezonarte.