This term became more used after the Chilean campaigns against the Peru-Bolivian Confederation in 1839 —Chilean troops defeated the confederation at the Battle of Yungay on 20 January 1839. In Chile tributes were paid to the victors of Yungay and, in a gesture of recognition, 20 January was declared the (in Spanish; "Day of the Chilean Roto")— and the War of the Pacific (1879–84).