Spanish military officer
Juan Antonio Garretón (born in Aragón, Spain) was a Spanish army officer who served in different positions in Colonial Chile and Chiloé. 
Garretón led Spanish forces based in Valdivia to victory in the Battle of Río Bueno of 1759. This battle was a break to a previous policy of befriending indigenous communities on behalf of the Spanish authorities in Valdivia.
Following his stay in Valdivia he served as Royal Governor of Chiloé from 1761 to 1765. Garretón had difficult relation with indigenous peoples and the Jesuits of Chiloé. His removal from the position of Royal Governor of Chiloé was related to his violation the secrecy of correspondence of local Jesuits.
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