Bushrod Rust Johnson was a Confederate general in the American Civil War and an officer in the United States Army. As a university professor he had been active in the state militias of Kentucky and Tennessee and on the outbreak of hostilities he sided with the South, despite having been born in the North in a family of abolitionist Quakers. As a divisional commander he managed to evade capture at the Battle of Fort Donelson, but was wounded at the Battle of Shiloh. He served under Robert E. Lee throughout the 10-month Siege of Petersburg, and surrendered with him at Appomattox.

The Battle of Fort Donelson was fought from February 11–16, 1862, in the Western Theater of the American Civil War. The Union capture of the Confederate fort near the Tennessee–Kentucky border opened the Cumberland River, an important avenue for the invasion of the South. The Union's success also elevated Brig. Gen. Ulysses S. Grant from an obscure and largely unproven leader to the rank of major general, and earned him the nickname of "Unconditional Surrender" Grant.