 Complete the following phrase:  The combat unit was soon reformed and placed under the command of Lieutet-Colonel Pedro Conde. On 19 January 1817, the companies of the regiment formed the vanguard of the patriot forces of General Soler. They crossed the Andes through the Paso de Los Patos, taking part in the Battles of Achupayas, Putaendo, Las Coimas and Guardia Vieja. El 12 February 1817, the formation played an important role in the victory obtained during the 