The Second Battle of Ream's Station was fought during the siege of Petersburg in the American Civil War on August 25, 1864, in Dinwiddie County, Virginia. A Union force under Maj. Gen. Winfield S. Hancock began destroying part of the Petersburg Railroad, which was a vital supply line for Gen. Robert E. Lee's Confederate army in Petersburg, Virginia. Lee sent a force under Lt. Gen. A. P. Hill to challenge Hancock and the Confederates were able to rout the Union troops from their fortifications at Reams Station. However, they lost a key portion of the railroad, causing further logistical difficulties for the remainder of the Richmond-Petersburg Campaign.

Winfield Scott Hancock was a United States Army officer and the Democratic nominee for President of the United States in 1880. He served with distinction in the Army for four decades, including service in the Mexican–American War and as a Union general in the American Civil War. Known to his Army colleagues as "Hancock the Superb," he was noted in particular for his personal leadership at the Battle of Gettysburg in 1863. His military service continued after the Civil War, as Hancock participated in the military Reconstruction of the South and the U.S.'s western expansion and war with the Native Americans at the Western frontier. This concluded with the Medicine Lodge Treaty. From 1881 to 1885 he was president of the Aztec Club of 1847 for veteran officers of the Mexican-American War.