They drove off the cattle stolen in the incursions (malones) and took them to Chile through the mountain passes to trade for goods, especially alcoholic beverages.
The lonco Calfucurá crossed the Andes from Chile to the Pampas around 1830 to aid the indigenous people, after Juan Manuel de Rosas, the governor of Buenos Aires, started to fight the Boreanos tribe.
directly contradict this statement, saying that de Rosas contacted the leader in Chile for help fighting against the Boreanos tribe [citation needed].
It is estimated that more than 5000 native peoples were killed or captured in that major assault, which was facilitated by the new Remington rifle arming the 6,000 Argentine soldiers (as stated by Gen. Ignacio Fotheringham) [Bodley p. 63, 72].
However, the losses to the Army were minimal, with only 13 soldiers killed; the lop-sided victory was taken as proof of European superiority and celebrated in art.