Silas Soule

American Union Army officer

Silas Stillman Soule ( SOHL; July 26, 1838 – April 23, 1865) was an American abolitionist, teenage conductor on the Underground Railroad, military officer, and early example of what would later be called a "whistleblower". He is honored as a hero for disobeying orders to participate in a massacre of Native Americans, and then giving evidence against his commander despite threats on his life.