Question: Action of Picheuta took place during what important feat in the Argentine and Chilean wars of independence, in which a combined army of Argentine soldiers and Chilean exiles invaded Chile leading to Chile's liberation from Spanish rule?
Sentence (from "Patagonia Rebelde"): Approximately 1,500 rural workers were shot and killed by the Argentine Army in the course of the operations, many of them executed by firing squads after surrendering.
Relevant evidence: No