Iowa 4th Volunteer Infantry (Union)
8/8/61
Organized - Iowa 4th Volunteer Infantry - Iowa
6/3/62
Battle - Pea Ridge - Leetown, Arkansas
By the spring of 1862, Union forces had pushed Confederates south and west through Missouri into northwestern Arkansas. On the night of March 6, 1862, Confederate Maj. Gen. Earl Van Dorn and his 16,000-man Army of the West set out to counterattack the Union position near Pea Ridge. Hoping to move quickly, in a fateful decision, Van Dorn ordered the supply trains far to the rear. Learning of Van Dorn's approach, some 10,000 Federals in Brig. Gen. Samuel R. Curtis's Army of the Southwest marched to meet the…READ MORE
5/10/62
Battle - Corinth, Mississippi
26/12/62
Leadership Change - Brigade - Brigadier General John Milton Thayer
Brigadier GeneralJohn Milton Thayer
26/12/62
Leadership Change - Division - Brigadier General Frederick Steele
Brigadier GeneralFrederick Steele
26/12/62
Leadership Change - Regiment - Colonel James Alexander Williamson
ColonelJames Alexander Williamson
26/12/62
Battle - Chickasaw Bayou - Warren County, Mississippi
27/12/62
Battle - Chickasaw Bayou, Mississippi
9/1/63
Leadership Change - Division - Brigadier General Frederick Steele, and undefined Escort: Dodson's Kane County Cavalry: Cpt William C. Wilder
9/1/63
Battle - Arkansas Post - Arkansas Post, Arkansas
The Battle of Arkansas Post, also known as the Battle of Fort Hindman, was a combined land-river assault by Union forces on the Confederate Fort Hindman, which loomed over a bend in the Arkansas River near the town of Arkansas Post. As the Union advance down the Mississippi River passed the mouth of the Arkansas, the presence of Fort Hindman outflanked the Federal forward positions.READ MORE
18/5/63
Leadership Change - Brigade - Brigadier General John M. Thayer
Brigadier GeneralJohn M. Thayer
18/5/63
Leadership Change - Division - Major General Frederick Steele
Major GeneralFrederick Steele
18/5/63
Battle - Vicksburg - Vicksburg, Mississippi
In mid-May, 1863, after six months of unsuccessful attempts, Maj. Gen. Ulysses S. Grant's Army of the Tennessee finally converged on Vicksburg, defended by a Confederate army under Lt. Gen. John C. Pemberton. Capture of the Mississippi River town was critical to Union control of the strategic river. Vicksburg was located on a high river bluff defended with artillery, and Pemberton's men had constructed a series of fortifications in an 8-mile arc surrounding the city on the landward side. After crossing the…READ MORE
23/11/63
Battle - Chattanooga Campaign - Chattanooga, Tennessee
After taking charge of the Union's western armies in October of 1863, Maj. Gen. Ulysses S. Grant focused on lifting the Confederate siege of Chattanooga, Tennessee, which had been in place since the Battle of Chickamauga in September. Grant opened the 'Cracker Line' across the Tennessee River to bring supplies to the beleaguered Army of the Cumberland inside the city, and, in mid-November, brought Maj. Gen. William T. Sherman's Army of the Tennessee into the city as well. The Confederates under Maj. Gen.…READ MORE
25/11/63
Battle - Missionary Ridge - Chattanooga, Tennessee
From the last days of September through October 1863, Gen. Braxton Bragg's army laid siege to the Union army under Maj. Gen. William Rosecrans at Chattanooga, cutting off its supplies. On October 17, Maj. Gen. Ulysses S. Grant received command of the Western armies; he moved to reinforce Chattanooga and replaced Rosecrans with Maj. Gen. George Thomas. A new supply line was soon established. Maj. Gen. William T. Sherman arrived with his four divisions in mid-November, and the Federals began offensive operat…READ MORE
26/11/63
Battle - Ringgold, Georgia
14/3/64
Battle - Claysville, Alabama
13/5/64
Battle - Resaca - Gordon County, Georgia; Whitfield County, Georgia
Following his withdrawal from Rocky Face Ridge, the first battle in Maj. Gen. William T. Sherman's campaign against Atlanta, Confederate Gen. Joseph E. Johnston established a four-mile defensive position protecting the Western & Atlantic Railroad west and north of Resaca, where the railroad crossed the Oostanaula River. On May 13th, Sherman tested the Rebel lines, sending forward divisions to skirmish with the Confederates, with little substantive result. On the 14th, the fighting erupted into a full-…READ MORE
26/5/64
Leadership Change - Brigade - Colonel James A. Williamson
ColonelJames A. Williamson
26/5/64
Leadership Change - Division - Brigadier General Peter J. Osterhaus
Brigadier GeneralPeter J. Osterhaus
27/5/64
Battle - Dallas - Paulding County, Georgia
During early and mid-May 1864, Maj. Gen. William T. Sherman successfully outmaneuvered the army of Gen. Joseph E. Johnston in multiple battles in northwest Georgia. Each time, Johnston fell back to a new defensive position closer to the strategic Confederate city of Atlanta. Stopped at New Hope Church on Johnston's left on May 26th, Sherman attacked Johnston's right at Pickett's Mill on May 27th. The next day, Lt. Gen. William J. Hardee's corps probed the Union defensive line, held by Maj. Gen. John A. Log…READ MORE
27/6/64
Battle - Kennesaw Mountain - Cobb County, Georgia
Fearing envelopment northwest of Atlanta, Confederate Gen. Joseph E. Johnston withdrew his army to a new defensive position astride Kennesaw Mountain near Marietta. Johnston selected this position in order to protect the Western & Atlantic Railroad, his supply link to Atlanta. Prior to taking up this new line on June 19th, Johnston had pioneers working through the night digging trenches and erecting fortifications, turning Kennesaw into a formidable earthen fortress. Having defeated Lieut. Gen. John…READ MORE
22/7/64
Leadership Change - Division - Brigadier General Charles R. Woods
Brigadier GeneralCharles R. Woods
22/7/64
Battle - Atlanta - Fulton County, Georgia; DeKalb County, Georgia
Despite the defeat at Peach Tree Creek, Confederate Lieut. Gen. John Bell Hood still had hopes of driving Maj. Gen. William T. Sherman's Yankees from the outskirts of Atlanta with an offensive blow. On the night of July 21, 1864, Hood ordered Lt. Gen. William J. Hardee's corps to make 15-mile night march and assault the Union left flank east of the city, held by Maj. Gen. James B. McPherson's Army of the Tennessee. Joining the attack with Hardee would be the corps of Maj. Gen. Benjamin Cheatham. Hood attac…READ MORE
31/8/64
Leadership Change - Brigade - Colonel James A. Williamson Sept 1
ColonelJames A. Williamson Sept 1
31/8/64
Leadership Change - Division - Brigadier General Peter J. Osterhaus
Brigadier GeneralPeter J. Osterhaus
31/8/64
Leadership Change - Brigade - Colonel James A. Williamson Sept 1
ColonelJames A. Williamson Sept 1
31/8/64
Battle - Jonesborough - Clayton County, Georgia
By late August 1865, the city of Atlanta was not yet subdued by Maj. Gen. William T. Sherman's armies. A few supply lines remained open to the city supporting the army of Lieut. Gen. John B. Hood encircled there. Union cavalry raids inflicted only superficial damage, quickly repaired by the Confederates. Sherman determined that if he could destroy the Macon & Western and Atlanta & West Point Railroads to the south the Rebel army would be forced to evacuate the city. On August 25, Union infantry beg…READ MORE
23/11/64
Battle - Lookout Mountain - Chattanooga, Tennessee
A month after opening the 'Cracker Line,' Gen. Ulysses S. Grant was ready to lift the siege of Chattanooga. On November 23, 1863, a reconnaissance in force by Gen. George H. Thomas' Army of the Cumberland overran the Confederate position on Orchard Knob, and gave Confederate Gen. Braxton Bragg deep concerns about the strength of the center of his line along Missionary Ridge. In shoring up this portion of the Confederate position, Bragg moved Gen. William H. T. Walker's division from the base of Lookout Mou…READ MORE
19/3/65
Battle - Bentonville - Bentonville, North Carolina
After his march to the sea, Maj. Gen. William T. Sherman headed north in early 1865 to unite with Lt. Gen. Ulysses S. Grant's army in Virginia. Only Confederate Gen. Joseph Johnston's army stood between Sherman and Grant. After briefly blocking Sherman's advance at Averasboro, North Carolina on March 16, Johnston struck Maj. Gen. Henry Slocum's wing of Sherman's army near Bentonville on March 19. The Confederates ran into stiff resistance, as Slocum established a defensive position. Johnston's assaults con…READ MORE
24/7/65
Mustered Out - Iowa 4th Volunteer Infantry - Iowa
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