Seventeen-year-old Private Henry Stanley of the Sixth Arkansas Infantry Regiment was captured at Shiloh and sent to Chicago's POW Camp Douglas where he took advantage of an opportunity to enlist in a Union Battery that was sent to the Eastern Theater.
He was hospitalized at Harpers Ferry due to illness where he soon walked out and traveled to New York. He caught a ship to Liverpool and returned to his British mother who told him he was not welcome. He returned to New York where he enlisted in the U.S. Navy and thereby may have become the only person to be a member of the Confederate Army, Union Army, and Union Navy during the Civil War. He deserted the Union Navy in February 1865.
After the war he became a reporter for The New York Herald where his byline became familiar to readers of his adventures in America's western frontier. Soon he asked The Herald for permission to seek other adventures in the unexplored regions of Africa. He became the first white man to traverse the Congo River from source to mouth. The Stanley (Boyoma) Falls were named after him. In November 1871 he found Dr. David Livingston, a missionary who had been out of touch with his home in Scotland for years.
Intending to organize a colony, Belgian King Leopold engaged Stanley to explore the Congo River basin. By 1884 Leopold controlled much of the basin as the sole shareholder of the Congo Free State. It became a humanitarian disaster and in 1908 the Belgian Parliament annexed the territory, naming it the Belgian Congo. Four years later Edgar Rice Burroughs wrote Tarzan of the Apes, the first of 26 Tarzan novels, mostly set in the colony.
In 1921 the Belgian Congo opened the Shinkolobwe mine which was worked by slave laborers to produce radium and uranium. It was the World's richest source at the time. Shinkolobwe ore was about 65% pure uranium as compared to 0.02% for the Canadian mines of the era. Given Nazi aggression in 1939, in 1940 Belgium shipped 1,200 tons to Staten Island where it was warehoused until September 1942 when the Manhattan Project bought it.
The Project also contracted to purchase 400 additional tons monthly from Shinkolobwe. Only two shipments were lost during the war. Eighty percent of the uranium in the first atomic bomb came from the Belgian Congo. The ore was refined into U-235 (a fissile isotope) at Oak Ridge, Tennessee, which is at the opposite end of the state from Shiloh. Less than one percent of pure uranium is U-235 and nearly all the rest is U-238.
Since Oak Ridge used an electromagnetic separation process, it required a lot of electricity, which was the reason the plant was located in the Tennessee Valley where the TVA could provide hydropower generation. Once in operation, Oak Ridge consumed one-seventh of America's daily electricity during World War II.
See "The Galvanized Yankee" New York Times Opinionator June 5, 2012.