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Benjamin M. Anderson (1836 – February 21, 1865) was a partisan soldier for the Confederate States of America during the American Civil War. He had gained military experience while serving under William Walker's filibustering campaign in Nicaragua. During the Civil War he served under Thomas Hines during Hines' espionage efforts behind Northern lines. While jailed for his war activities in a Cincinnati, Ohio jail, he committed suicide by a self-inflicted gunshot to the head on February 19, 1865.