City Point, Virginia, played a significant role in the final year of the Civil War. General-in-Chief of the Union Army Ulysses S. Grant established his headquarters here on June 15, 1864. Union ships sailed supplies up the James River to this hamlet north of Petersburg, where a massive supply depot of more than 280 buildings housed facilities and services essential to keeping the Union Army combat ready. Deliveries supported the 100,000 men and 65,000 animals Grant employed in the seige of Petersburg, while the Quartermasters Corps built eight wharves covering 8 acres and including 100,000 square feet of warehouse space, making City Point briefly one of the busiest ports in the world. The Union Army also established hospital facilities at City Point in 1864, first housing the wounded in 1,200 tents and later in ninety frame buildings capable of holding 5,400 men; by 1865, the complex had treated 29,000 patients. During the Civil War, thousands of Union soldiers perished in battles for control of Richmond, and they are now buried in City Point National Cemetery and six other national cemeteries established in the Richmond-Petersburg area in 1866. Most of the 6,909 burials at City Point were moved from hospital cemeteries, including the old City Point burial ground, Point of Rocks Cemetery in Chesterfield County, and Harrison's Landing in Charles City County. Unlike most Richmond-area national cemeteries, only 1,400 unknowns are interred here. More than 1,100 Confederate soldiers who died in nearby hospitals after the Union occupation lie here, most in Section C. In the 1950s, additional Civil War dead were reburied here after graves were uncovered in Hopewell, Virginia, in 1955 and during Interstate 95 construction four years later. Beginning in March 1863, the federal government actively recruited black men for the U.S. Army, and in May 1864 the War Department created the Bureau of United States Colored Troops. These regiments served from Virginia to Texas, and after assignment in the X and XVIII Corps of the Army of the James, they were consolidated into the XXV Corps in December 1864. More than 1,300 U.S. Colored Troops soldiers, both known and unknown, were buried here. In 1865, a 20-foot-tall marble obelisk was erected under the direction of Maj. Gen. Benjamin Butler and others to honor the dead who served in the Army of the James, and it bears the badges of the XVIII Corps, X Corps, and XXIV Corps.