Wednesday, April 29. In Virginia, a major part of General Joseph Hooker’s Federal Army of the Potomac crossed the Rappahannock River at Kelly’s and U.S. fords and moved into the Wilderness. This was part of Hooker’s plan to force General Robert E. Lee’s Confederates out of their impregnable positions in Fredericksburg and give battle. To further prod Lee, Hooker sent Federal cavalry under General George Stoneman between Lee and Richmond to catch the Confederates in a pincers movement.
On the Mississippi River, Admiral David D. Porter’s Federal naval fleet began shuttling General Ulysses S. Grant’s troops across the river. This was part of Grant’s plan to march southward past Vicksburg on the river’s west bank, then recross the river and attack the city from behind.
A Federal diversionary force under Colonel Benjamin Grierson continued raiding Mississippi, skirmishing at Brookhaven. In Missouri, General John S. Marmaduke’s Confederates skirmished at Castor River.
Thursday, April 30. In Virginia, Joseph Hooker established headquarters at Chancellorsville, a small village in the Wilderness. Hooker did not order an attack; rather, he waited for Robert E. Lee’s Confederates to move into the open. Confident that Lee would be destroyed, Hooker proclaimed to his troops that “the operations of the last three days have determined that our enemy must ingloriously fly, or come out from behind their defenses and give us battle on our ground, where certain destruction awaits him.” However, Lee had a plan of his own.
On the Mississippi, the vanguard of Ulysses S. Grant’s army under General John A. McClernand assembled on the river’s east bank, south of Vicksburg and ready to advance inland unopposed. Grant later wrote, “All the campaigns, labors, hardships, and exposures, from the month of December previous to this time, that had been made and endured, were for the accomplishments of this one object.” Grant was aided by Benjamin Grierson’s cavalry diversion, as well as Federal demonstrations north of Vicksburg led by General William T. Sherman.
Skirmishing occurred in Alabama, western Virginia, and the Indian Territory.
Friday, May 1. In Virginia, the Battle of Chancellorsville began. As Joseph Hooker’s Army of the Potomac tried outflanking Robert E. Lee’s Confederate Army of Northern Virginia, Lee hurried to block the Federals’ exit from the Wilderness, a region of tangled underbrush that would offset the superior Federal numbers. Lee left about 10,000 men to face the Federal corps threatening Fredericksburg. After holding his ground in a series of skirmishes, Hooker ordered a withdrawal to stronger defensive positions around Chancellorsville. This stunned his subordinates, and although Hooker explained that he thought Lee was heavily reinforced, he later admitted, “For once, I lost confidence in Joe Hooker.”
The Federal withdrawal allowed Lee to seize the initiative. That evening, he discussed strategy with General Thomas “Stonewall” Jackson, who proposed to split the army by sending Jackson’s corps to attack the vulnerable right flank. This was a bold plan because Lee’s army was already split between Fredericksburg and Chancellorsville. However, Lee approved.
In his effort to capture Vicksburg, General Ulysses S. Grant’s Federals continued crossing the Mississippi River south of the town at Bruinsburg. The lead Federal corps under General John A. McClernand moved inland toward Port Gibson, about 30 miles south of Vicksburg. A small Confederate force outflanked at Grand Gulf hurried to Port Gibson to intercept McClernand. After a day-long fight, the outnumbered Confederates withdrew. Securing Port Gibson allowed the main Federal force to establish strong positions at Grand Gulf.
Before adjourning, the Confederate Congress approved several measures, including creating a Provisional Navy to complement the Regular Navy; allowing the president to approve contracts for building naval vessels in Europe; allowing congressional delegates from various Indian nations; creating a commission on taxes; tightening provisions on the conscription law; and adopting a national flag known as the “Stainless Banner.”
Skirmishing occurred in Alabama, Louisiana, and Tennessee. In Missouri, John Marmaduke’s Confederates skirmished at Chalk Bluff on the St. Francis River as they returned to Arkansas.
Saturday, May 2. In Virginia, “Stonewall” Jackson’s 28,000 Confederates moved around the Federal right flank. Federal scouts observed them and concluded they were retreating. However, Jackson attacked the unsuspecting Federal Eleventh Corps at 6 p.m. On the Federal left, Robert E. Lee’s remaining Confederates attacked to divert attention from Jackson, even though they were outnumbered by nearly four-to-one. The fight ended at nightfall with the Federals in disarray. During the night, “Stonewall” Jackson was accidentally shot by Confederate pickets while scouting positions.
In Louisiana, Benjamin Grierson’s Federals arrived in Baton Rouge after conducting one of the most successful cavalry operations of the war. Diverting Confederate attention from Ulysses S. Grant, Grierson’s men raided western Tennessee, killing 100 Confederates, taking 500 prisoners, destroying up to 60 miles of railroad and telegraph lines, capturing or destroying 3,000 arms, and seizing 1,000 horses and mules. Grierson’s men had traveled 600 miles and fought four engagements, evading thousands of Confederates along the way.
Skirmishing occurred in Alabama, Tennessee, and western Virginia.
Sunday, May 3. In Virginia, “Stonewall” Jackson’s wounds from the previous night were so serious that he relinquished command to General Jeb Stuart. By morning, the Federals had established a V-shaped defensive line. When the Confederates attacked, the Federals slowly moved back. Joseph Hooker had tens of thousands of reserves that were yet to be deployed, but he ordered no counterattack. He was knocked unconscious when he was hit in the head by wood scattered from a Confederate shell. When he regained consciousness, Hooker ordered a general withdrawal.
In Alabama, Colonel A.D. Streight’s Federals surrendered to Confederate General Nathan Bedford Forrest after heavy raiding and skirmishing. The Roman Catholic bishop of Iowa threatened church members with excommunication if they refused to renounce the pro-Confederate Knights of the Golden Circle.
Monday, May 4. In Virginia, the Federal corps at Fredericksburg broke through the Confederate defenses and joined Joseph Hooker’s main force. However, Hooker was already withdrawing his army across the Rappahannock River. Confederate President Jefferson Davis wired Lee his thanks on behalf of the people “reverently united with you in giving praise to God for the success with which He has crowned your arms.”
In Mississippi, Grant’s Federals continued moving south of Vicksburg, skirmishing at various places. Skirmishing occurred in Virginia, South Carolina, Tennessee, and Missouri.
Tuesday, May 5. In Virginia, Robert E. Lee’s Confederate prepared to attack Joseph Hooker’s Federals again. However, Hooker’s army fell back across the Rappahannock, ending the Battle of Chancellorsville in Federal defeat. Hooker was defeated by a force less than half his size that had been divided three times. This humiliated the North and has since been considered one of the greatest military victories in history. However, it was a pyrrhic victory for Lee because he suffered a much greater casualty percentage than Hooker.
Former Congressman Clement Vallandigham was arrested by Federal troops in Dayton, Ohio for violating General Order No. 38. The order, issued by Department of the Ohio commander Ambrose Burnside, had prohibited disloyalty in his jurisdiction. Vallandigham was one of the most outspoken “Copperheads,” or Peace Democrats who opposed the war. His specific offense had been delivering a speech calling the war “wicked and cruel,” where the object was not to preserve the Union but to subjugate the South and establish a Republican dictatorship.
Skirmishing occurred in Mississippi, Tennessee, and Virginia. Federals conducted operations against the Indians in the Utah and Idaho territories.
Primary source: The Civil War Day by Day by E.B. Long and Barbara Long (New York, NY: Da Capo Press, Inc., 1971)
Civil War History 
Warfare is a fascinating subject. Despite the dubious morality of using violence to achieve personal or political aims. It remains that conflict has been used to do just that throughout recorded history.
Your article is very well done, a good read.