wˌɛn ðɪ ˈɑːɹmi mˈuːvd tə tʃˈɪli ɪn wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd sˈɛvəntˌiːn, ðə ɹˈɛdʒɪmənt kɹˈɔst ðə mˈaʊntɪn ɹˈeɪndʒ jˈuːzɪŋ ðɪ ˌʌspɐlˈɑːɾə pˈæs, ˈɔːlweɪz kəmˈændᵻd baɪ lˌɑːs hˈiəɹəz.
When the Army moved to Chile in 1817, the regiment crossed the mountain range using the Uspallata pass, always commanded by Las Heras.