Carlists supporting The Battle of Artaza (Acción de Artaza) occurred on 20–22 April 1835 during the First Carlist War.

Jerónimo Valdés, at the time Minister of War, arrived at the area known as Las Amescoas with 22,000 men with the intention of definitively destroying the Carlist forces.

[1] Zumalacárregui had 5,000 men, but had the advantage of knowing the terrain and practicing guerrilla tactics.

[1] Valdes’ troops maneuvered up the mountains in the area.

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