Political map of South American nations 20 June 1870 (Victory of the Triple Alliance): After the Brazilian capture of Asunción in 1869, Paraguayan President Solano López fled to the interior where he fought on until he and much of his remaining government were killed in battle at Cerro Corá in March 1870 (Battle of Cerro Corá). At the cost of some 400,000 dead - including between 50% and 90% of Paraguay's male population - the Paraguayan War was at an end.