Today in 1864, General James B. McPherson assumes command of the Union Army of the Tennessee

US General James B. McPherson, the highest ranking Union General killed in combat on July 22, 1864.
US General James B. McPherson, the highest ranking Union General killed in combat on July 22, 1864.

after William T. Sherman is promoted to the rank of commander of the Division of the Mississippi, and becomes the overall leader in the West.

McPherson was born in Ohio in 1828 and graduated first in his class from the U.S. Military Academy at West Point in 1853. He joined the Army’s engineering corps as a second lieutenant, and spent the pre-war years in New York City and Alcatraz Island in California. When the Civil War began, McPherson was transferred to the East and promoted to captain. Yearning for combat, he was disappointed when he was assigned to command the forts of Boston Harbor. McPherson contacted General Henry Halleck,

General Henry W. ("Old Brains") Halleck
General Henry W. (“Old Brains”) Halleck

commander of the Department of the Missouri and a former acquaintance in California, who summon-ed him to St. Louis. In Missouri, McPherson helped set up recruiting stations and inspected defenses.

McPherson was transferred to General Ulysses S. Grant’s command on February 1, 1862, just as Grant

Lt. General Ulysses Grant
Lt. General Ulysses Grant

was launching an expedition against forts Henry and Donelson in Tennessee. McPherson’s work in analyzing the defenses of Fort Donelson earned him the respect of Grant, and McPherson’s star rose rapidly after the Battle of Shiloh in Tennessee in April 1862. McPherson fought with distinction, and was promoted to colonel. Two weeks later, he became a brigadier general. After his actions at the Battle of Corinth, Mississippi, in October 1862, McPherson was again promoted, this time to major general. In December, he capped a successful year by taking command of the XVII Corps in Grant’s Army of the Tennessee.

McPherson served as a corps commander throughout 1863, quite ably leading his men at Vicksburg, Mississippi, and Chattanooga, Tennessee. Grant’s promotion to general-in-chief of all Union forces created a chain reaction of promotions. Grant left for Washington, D.C., and Sherman assumed com-mand in the West, while McPherson inherited the Army of the Tennessee. This force was not an independent command, as it was one of three armies under Sherman’s leadership during the Atlanta campaign of 1864. When the campaign reached Atlanta in July 1864 after three hard months of fighting, McPherson was charged with attacking Confederate forces on the northeast side of the city. At the Battle of Peachtree Creek on July 22, McPherson was directing operations when he and his staff emerged from a grove of trees directly in front of the Confederate line. They were ordered to surrender but McPherson turned his horse and attempted to escape. He was mortally wounded, becoming the highest-ranking Union general killed in the war.


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