Mariano Acha [SEP] conflict
Mariano Acha
Mariano Acha (11 November 1799 - 16 September 1841) was a soldier who fought in the Argentine Civil Wars.
On 20 March 1841 the four hundred men led by Colonel Mariano Acha were surprised by troops under General Nazario Benavídez and scattered.
In the Battle of Angaco on 16 August 1841, Acha defeated Benavides.
Acha defended San Juan against the forces supporting Juan Manuel de Rosas, but after 48 hours surrendered on 22 August 1841.
On 21 September 1841 he was executed.
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of 1840 and 1841 against the Northern Coalition in La Rioja, Catamarca and San Juan. 
While Aldao was facing Mariano Acha in the Battle of Angaco, he was in command of the Mendoza Province forces. 
He supported Nazario Benavídez in the Battle of La Chacarilla, where General Mariano Acha was captured and San Juan was recovered, 
but had to return to Mendoza when it was decided to abandon San Juan to the Unitarian army of Gregorio Aráoz de Lamadrid. 
He joined forces with General Ángel Pacheco, and led