The Eighth Army Corps was formed on June 21, 1898, shortly after the outbreak of the Spanish–American War, in order to provide a ground contingent to exploit Commodore George Dewey's success in defeating the Spanish fleet in Manila Bay on May 1, 1898. Under the command of Major General Wesley Merritt, Eighth Corps had only one division, curiously numbered as the Second Division. The Second Division was under the command of Brigadier General Thomas M. Anderson.