Deep Bottom is the colloquial name for an area of the
James River in
Henrico County southeast of
Richmond, Virginia, at a horseshoe-shaped bend in the river known as Jones Neck. It was a convenient crossing point from the
Bermuda Hundred area on the south side of the river.
Lt. Gen. Ulysses S. Grant began a siege of the city of
Petersburg, Virginia, after
initial assaults on the
Confederate lines, June 15–18, 1864, failed to break through. While Union cavalry conducted the
Wilson-Kautz Raid (June 22 – July 1) in an attempt to cut the railroad lines leading into Petersburg, Grant and his generals planned a renewed assault on the Petersburg fortifications, an attack scheduled for July 30 that would become known as the
Battle of the Crater. Hoping to increase the chances for success at Petersburg, Grant planned a movement against Richmond that
Gen. Robert E. Lee would likely counter with troops taken out of the Petersburg line. Grant ordered the
II Corps of the
Army of the Potomac, commanded by
Maj. Gen. Winfield S. Hancock, and two divisions of Maj. Gen.
Philip H. Sheridan's Cavalry Corps to cross the river to Deep Bottom by pontoon bridge and advance against the Confederate capital. A division of the
X Corps (
Army of the James), commanded by
Brig. Gen. Robert S. Foster, had previously crossed on a second pontoon bridge just upstream to secure a bridgehead on the north bank of the river. Grant's plan called for Hancock to pin down the Confederates at Chaffin's Bluff and prevent reinforcements from opposing Sheridan's cavalry, which would attack Richmond if practicable. If not—a circumstance Grant considered more likely—Sheridan was ordered to ride around the city to the north and west and cut the
Virginia Central Railroad, which was supplying Richmond from the
Shenandoah Valley. The Confederate fieldworks protecting Richmond were commanded by Lt. Gen.
Richard S. Ewell. When Lee found out about Hancock's pending movement, he ordered that the Richmond lines be reinforced to 16,500 men. The four brigades of Maj. Gen.
Joseph B. Kershaw's division joined Col. John S. Fulton's brigade of the Department of Richmond and the brigades of Brig. Gens.
James H. Lane and
Samuel McGowan from Maj. Gen.
Cadmus M. Wilcox's division. The reinforcements moved east on New Market Road (present-day
Virginia State Route 5) and took up positions on the eastern face of New Market Heights. ==Opposing forces==