Born in 1827, Maj. Gen. Henry W. Slocum (right) graduated from West Point in 1852 and was assigned to the artillery. Resigning four years later, he practiced law in Syracuse, NY and served in the New York State Assembly in the years prior to the Civil War. With the outbreak of hostilities, Slocum was appointed colonel of the 27th New York and led the regiment at the First Battle of Bull Run in July 1861. Promoted to brigadier general the following month, he distinguished himself during the Peninsula Campaign and Seven Days Battles in June-July 1862. Promoted to major general at the young age of 34, he fought at South Mountain that September and took command of XII Corps on October 20. Avoiding the bloodbath at Fredericksburg that December, Slocum led the right wing of the Army of the Potomac during the defeat at Chancellorsville in May 1863. Marching north in June, he was criticized for his slow movement during the first day of the Battle of Gettysburg on July 1. In September, XII Corps was transferred west to aid in the relief of Chattanooga. Unwilling to serve under his former commander, Maj. Gen. Joseph Hooker, Slocum left XII Corps and oversaw Union forces at Vicksburg. Returning to his men in July 1864, he served under Maj. Gen. William T. Sherman during the final parts of the Atlanta Campaign and led the Army of Georgia during the March to the Sea that fall. In the spring of 1865, Slocum took part in the Carolinas Campaign and played a key role at the Battle of Bentonville. With the end of the war, he left the army and later served in Congress. Slocum died in 1894 after aiding in the construction of the Brooklyn Bridge.
Civil War - Union Leaders:
- Major General Joshua Lawrence Chamberlain
- Colonel Robert Gould Shaw
- Brigadier General Nelson Miles
- Rear Admiral David Dixon Porter
- Major General Henry W. Halleck
Photograph Courtesy of the Library of Congress