Question: The leader of the Union Army of the Tennessee in The Meridian Campaign died on what date?

Context paragraphs:
William Tecumseh Sherman: William Tecumseh Sherman (February 8, 1820 – February 14, 1891) was an American soldier, businessman, educator, and author.  He served as a general in the Union Army during the American Civil War (1861–65), for which he received recognition for his outstanding command of military strategy as well as criticism for the harshness of the "scorched earth" policies he implemented in conducting total war against the Confederate States.

Meridian Expedition: The Meridian Expedition took place from February 3 to March 6, 1864 under the command of Major General William Tecumseh Sherman, in command of the Department of the Tennessee.  The columns were under the command of Brigadier General William Sooy Smith and Colonel James H. Coates.  The expedition was tasked to destroy a rebel cavalry commanded by Major General Nathan Bedford Forrest, maintain communications with Middle Tennessee and take men from the defense on the Mississippi River to the Atlanta Campaign.  To maintain communications, they were to protect the Mobile and Ohio Railroad.  The expedition ended with the Union Army abandoning Yazoo City.

Meridian Campaign: The Meridian Campaign took place from February 3–28, 1864, from Vicksburg, Mississippi to Meridian, Mississippi, by the Union Army of the Tennessee, led by Maj. Gen. William Tecumseh Sherman.  Sherman captured Meridian, Mississippi, inflicting heavy damage to it.  The campaign is viewed by historians as a prelude to Sherman's March to the Sea (Savannah Campaign) in that a large swath of damage and destruction was inflicted on Central Mississippi as Sherman marched across the state and back.

Union Army: The Union Army or Federal Army was the land force that fought for the Union during the American Civil War, 1861 to 1865.  It included the permanent regular army of the United States, which was augmented by massive numbers of temporary units consisting of volunteers as well as conscripts.  The Union Army fought and defeated the Confederate Army during the war.  At least two and a half million men served in the Union Army; almost all were volunteers.  About 360,000 Union soldiers died from all causes; 280,000 were wounded and 200,000 deserted.

Battle of Peachtree Creek: The Battle of Peachtree Creek was fought in Georgia on July 20, 1864, as part of the Atlanta Campaign in the American Civil War.  It was the first major attack by Lt. Gen. John Bell Hood since taking command of the Confederate Army of Tennessee.  The attack was against Maj. Gen. William T. Sherman's Union army which was perched on the doorstep of Atlanta.  The main armies in the conflict were the Union Army of the Cumberland, commanded by Maj. Gen. George Henry Thomas, and two corps of the Confederate Army of Tennessee, commanded by Lt. Gen. John B. Hood.  The battle of Peachtree Creek was the first battle fought by Hood as commander of the Army of Tennessee.

James Patton Brownlow: James Patton Brownlow (December 17, 1842–April 26, 1879) was a Union Army officer during the American Civil War.  Brownlow was the son of East Tennessee Unionist preacher, newspaper publisher and editor, Governor of Tennessee and U.S. Senator "Parson" William G. Brownlow.  James P. Brownlow served in several positions in the Union Army, finishing the war as colonel of the 1st Tennessee Volunteer Cavalry Regiment (Union).  He was noted for his courage and perceptiveness in battle and keen sense of military tactics.  He led several daring raids and attacks.  The United States Senate confirmed the award of the grade of brevet brigadier general of volunteers, to rank from March 13, 1865, to Brownlow on March 12, 1866.  After the war, he was adjutant general of the State of Tennessee and then a railroad superintendent.  He died in 1879 at the age of 36.

Chickamauga Campaign: The Chickamauga Campaign of the American Civil War was a series of battles fought in northwestern Georgia from August 21 to September 20, 1863, between the Union Army of the Cumberland and Confederate Army of Tennessee.  The campaign started successfully for Union commander William S. Rosecrans, with the Union army occupying the vital city of Chattanooga and forcing the Confederates to retreat into northern Georgia.  But a Confederate attack at the Battle of Chickamauga forced Rosecrans to retreat back into Chattanooga and allowed the Confederates to lay siege to the Union forces.

Camp Douglas (Chicago): Camp Douglas, in Chicago, Illinois, sometimes described as "The North's Andersonville" was the largest Union Army prisoner-of-war camps for Confederate soldiers taken prisoner during the American Civil War.  Based south of the city on the prairie, it was also used as a training and detention camp for Union soldiers.  The Union Army first used the camp in 1861 as an organizational and training camp for volunteer regiments.  It became a prisoner-of-war camp in early 1862.  Later in 1862 the Union Army again used Camp Douglas as a training camp.  In the fall of 1862, the Union Army used the facility as a detention camp for paroled Confederate prisoners (these were Union soldiers who had been captured by the Confederacy and sent North under an agreement that they would be held temporarily while formal prisoner exchanges were worked out).

Battle of Amelia Springs: The Battle of Amelia Springs, Virginia was an engagement between the Union Army (Army of the Shenandoah, Army of the Potomac and Army of the James) and Confederate Army of Northern Virginia that occurred on April 5, 1865 during the Appomattox Campaign of the American Civil War.  It was followed by a second rear guard action near the same location on the night of April 5, 1865 and morning of April 6, 1865 during the Union Army pursuit of the Confederate forces (Army of Northern Virginia and Richmond local defense forces) which were fleeing westward after the fall of Petersburg and Richmond, Virginia at the Third Battle of Petersburg (sometimes shown as the Breakthrough at Petersburg) on April 2, 1865.  The actions took place just prior to the Battle of Sailor's Creek (sometimes shown as "Sayler's Creek") on April 6, 1865.  That battle would be the last major engagement between the Union Army under the overall direction of Union General-in-Chief, Lt. Gen. Ulysses S. Grant, and General Robert E. Lee's Army of Northern Virginia before that Confederate army's surrender at Appomattox Court House, Virginia on April 9, 1865.

Battle of Namozine Church: The Battle of Namozine Church, Virginia was an engagement between Union Army and Confederate States Army forces that occurred on April 3, 1865 during the Appomattox Campaign of the American Civil War.  The battle was the first engagement between units of General Robert E. Lee's Confederate Army of Northern Virginia after that army's evacuation of Petersburg and Richmond, Virginia on April 2, 1865 and units of the Union Army (Army of the Shenandoah, Army of the Potomac and Army of the James) under the immediate command of Maj. Gen. Philip Sheridan, who was still acting independently as commander of the Army of the Shenandoah, and under the overall direction of Union General-in-Chief Lt. Gen. Ulysses S. Grant.  The forces immediately engaged in the battle were brigades of the cavalry division of Union Brig. Gen. and Brevet Maj. Gen. George Armstrong Custer, especially the brigade of Colonel and Brevet Brig. Gen. William Wells, and the Confederate rear guard cavalry brigades of Brig. Gen. William P. Roberts and Brig. Gen. Rufus Barringer and later in the engagement, Confederate infantry from the division of Maj. Gen. Bushrod Johnson.

Supporting paragraphs: Meridian Campaign William Tecumseh Sherman
Answer: February 14, 1891