The Battle of San Jacinto took place on September 14 of 1856 in Hacienda San Jacinto, Managua, Nicaragua -- between 160 soldiers of the Legitimist Septemtrion Army led by Colonel José Dolores Estrada versus 300 American filibusters Americans of William Walker led by Lieutenant Colonel Byron Cole. The filibusters were defeated by Estrada after 4 hours of combat between 7 am and 11 am.