 Complete the following phrase:  On the outbreak of the Civil War, Seaver mustered on July 16, 1861, in Newbury, where he was given command of a company in the 3rd Vermont Infantry as a captain, serving until July 1864. He eventually commanded the regiment, and was promoted to major on August 13, 1861; to lieutet colonel on September 17, 1862; and to full colonel on January 13, 1863. He served in the Battles at 