15.3 1863: The Changing Nature of the War

The Changing Nature of the Civil War in 1863

The year 1863 marked a turning point in the Civil War. The conflict evolved from a limited war focused on preserving the Union into something far more destructive, with both sides targeting not just armies but the resources and infrastructure that sustained them. Understanding this shift helps explain why the war ended the way it did and why its consequences ran so deep.

Concept of Total War

Total war is a type of warfare where a nation mobilizes all available resources and its entire population to support the war effort. Rather than just defeating enemy armies on the battlefield, total war involves targeting civilian infrastructure and resources to destroy the opponent's ability and will to fight.

In 1863, the Civil War increasingly moved in this direction:

• Union campaigns began deliberately targeting Confederate infrastructure and civilian property. The Vicksburg Campaign, for example, involved Union forces destroying farms, railroads, and supplies across Mississippi.
• Confederate forces responded with guerrilla warfare and raids on Union supply lines and civilian areas.
• The escalation led to higher casualties and widespread devastation on both sides.

Note that Sherman's March to the Sea (late 1864) and the burning of Atlanta are often cited as the clearest examples of total war, but the groundwork for these scorched-earth tactics was laid during the campaigns of 1863.

Union vs. Confederate Mobilization

The two sides faced very different challenges in keeping their armies supplied and reinforced. The Union's advantages in population and industry grew more decisive as the war dragged on.

Union mobilization strategies:

• Enacted the Enrollment Act of 1863, instituting a federal draft to bolster military ranks. Men could avoid service by paying a $300 commutation fee or hiring a substitute, which sparked resentment among working-class Northerners and contributed to the New York City Draft Riots (July 1863).
• Leveraged its larger population (about 22 million vs. the Confederacy's 9 million, of whom roughly 3.5 million were enslaved) and industrial capacity. Northern factories and railroads kept armies well-supplied with weapons, ammunition, and equipment.
• Following the Emancipation Proclamation, began recruiting African American soldiers into the United States Colored Troops. By war's end, roughly 180,000 Black men served in the Union Army. The 54th Massachusetts Infantry became one of the most famous regiments after its assault on Fort Wagner in July 1863.

Confederate mobilization strategies:

• Struggled with a much smaller free population and limited industrial resources.
• Relied heavily on conscription, having enacted a draft in 1862, a full year before the Union did.
• Faced growing shortages of food, clothing, and equipment. Rampant inflation made Confederate currency nearly worthless, and supply distribution broke down as Union forces captured key railroads and river routes.
• Depended on enslaved labor to maintain agricultural production on plantations, freeing white men to serve in the army.

Momentum Shift in 1863

Several major campaigns in 1863 swung the war's momentum decisively toward the Union.

Battle of Chancellorsville (May 1–6, 1863) A Confederate victory in Virginia, where General Robert E. Lee divided his outnumbered force and outmaneuvered a much larger Union army. But the victory came at a steep cost: General Thomas "Stonewall" Jackson, one of Lee's most trusted commanders, was accidentally shot by his own troops and died of complications days later. This loss would haunt the Confederacy at Gettysburg just two months later.

Battle of Gettysburg (July 1–3, 1863) The decisive Union victory that halted Lee's second invasion of the North. After three days of intense fighting in Pennsylvania, Lee's army suffered devastating casualties, particularly during Pickett's Charge on the final day, when roughly 12,500 Confederate soldiers advanced across open ground into Union fire. This was the last major Confederate offensive in the Eastern Theater, and Lee's army never fully recovered.

Vicksburg Campaign (May 18–July 4, 1863) General Ulysses S. Grant besieged the Confederate fortress city of Vicksburg, Mississippi, for 47 days. When the garrison surrendered on July 4, the Union gained complete control of the Mississippi River. This effectively split the Confederacy in two, cutting off Texas, Arkansas, and most of Louisiana from the eastern Confederate states.

Chattanooga Campaign (September–November 1863) After a Confederate victory at the Battle of Chickamauga in September, Union forces regrouped and won decisive battles at Lookout Mountain and Missionary Ridge in November. These victories secured Union control of Tennessee and opened the path into Georgia for the Atlanta Campaign the following year.

Impact of the Emancipation Proclamation

Issued on January 1, 1863, the Emancipation Proclamation declared enslaved people in Confederate-held territory to be free. While it didn't immediately free anyone in areas the Union couldn't enforce it, its effects were profound.

How it changed the war:

• It redefined the war's purpose, making the abolition of slavery a central Union goal alongside preserving the Union.
• It encouraged enslaved people in Confederate territory to escape behind Union lines, where many entered contraband camps and eventually joined the war effort.
• It authorized the recruitment of African American soldiers into the Union Army, adding a significant new source of manpower.
• It weakened the Confederacy by undermining the enslaved labor force that sustained its agricultural economy.

Broader consequences:

• International support shifted further toward the Union. Britain and France, which had abolished slavery decades earlier, found it politically impossible to recognize or aid a nation explicitly fighting to preserve slavery.
• Opposition to the war grew among Copperheads (Peace Democrats) in the North, who criticized the Proclamation and called for a negotiated peace.
• The Proclamation set the stage for the 13th Amendment (ratified in 1865), which permanently abolished slavery throughout the United States, and for the long, difficult process of Reconstruction that followed.