History says: During the war against the filibusteros of 1856-1857, Escazú was one of the communities that gave a great contribution with the sending of a legion of soldiers to the command of the commander Mercedes Guillén, who gave a great battle in the defeat to The followers of William Walker. Escazú contributed one hundred and twenty-six soldiers to the campaign, of a population of about four thousand inhabitants at that time, being the second to contribute more soldiers to the army. Between Escazuceños there were fifty-seven dead and fourteen wounded, corresponding to 32% of the national total, becoming the community with more dead in this war and the second with more wounded, after San Jose. There were two escazuceños officers: Captain Miguel Herrera, who was Treasurer of the Army and was wounded in the Second Battle of Rivas, and Lieutenant Mercedes Guillén, who left unscathed of the war. In that battle there were a total of thirty-eight escazuceños dead, who represent 27% of all the dead in that battle.