The First Triumvirate was later replaced by the Second Triumvirate, with a more liberal ideology, who called the Asamblea del Año XIII. This assembly authorized to use the flag as a War flag, but not as a national one. The first oath to the newly approved flag was on February 13, 1813, next to the Salado River, which is also known since then as "Río Juramento" ("Oath River"). The first battle fought with the approved flag was the Battle of Salta, a decisive patriotic victory that achieved the complete defeat of royalist Pío Tristán. The army moved to the north, but was defeated at the battles of Vilcapugio and Ayohuma. After those defeats, the army retreated to the South. Fearing that the enemy armies got the flags, he left them to the care of the parish priest of Macha, which hid them behind a Saint Teresa of Avila's portrait in a chapel near the small hamlet of Titiri (). Belgrano was summoned back to Buenos Aires, and sent to Europe in diplomatic mission, and the flags was considered to be lost.