Early in the Civil War, Union generals in the East, like McClellan, were hesitant to act decisively.
Lincoln wasn't initially an abolitionist in 1861-1862, but his views evolved as the war progressed.
Abolitionist military leaders gained influence over time, while those ambivalent about slavery lost influence.
Western generals like Ulysses S. Grant and William Sherman had a more aggressive attitude.
The Confederacy was less imposing in the West compared to the East.
The Union capitalized on this, pushing its advantage due to more manpower, resources, and political capital.
Early geographic successes occurred in the West, securing Missouri and Kentucky for the Union.
The Union utilized river transport and amphibious landings to advance against the Confederacy in areas like Middle Western and Western Tennessee, and Northeast Arkansas.
They exploited the river system for troop and resource transport, gaining an advantage over the Confederates.
The Union quickly flooded the river system with small craft and vessels, becoming proficient in amphibious landings by late 1861 and 1862.
This marked the beginning of a tradition of capable amphibious landings in American history, influencing later conflicts like the Spanish-American War, actions in the Philippines, and World War II.
At Shiloh, the Confederates initially threatened the Union, but Grant held his ground.
Grant knew reinforcements were arriving and planned an aggressive counterattack at sunrise on the second day.
The Union gained an advantage through numbers and aggressiveness, capitalizing on available resources and manpower.
Unlike the Eastern theater under General Lee, the Confederacy in the West struggled with indecisiveness.
By early spring 1862, Tennessee was essentially back in the Union, with early reconstruction efforts beginning.
The Upper Mississippi Basin was also secured by the Union by autumn 1862, setting the stage for the siege of Vicksburg in 1863.
The Civil War resulted in approximately 600,000 dead soldiers.
Only about one-third of deaths were due to immediate combat circumstances.
Two-thirds were due to conditions such as exposure, illness, malnutrition, and prison camp conditions.
Wounded numbers were also significant, with approximately 275,000 Union wounded and 137,000 Confederate wounded.
Medical treatment was often rudimentary, and contamination in field hospitals led to high mortality rates among the wounded.
Psychological wounds and post-traumatic stress were not well understood at the time, but likely affected millions of veterans.
The Confederacy fought a total war, mobilizing all resources due to its existential nature.
The Union did not fully mobilize to the extent of a 20th-century-style total war.
The Union mobilized industry, manufacturing, agriculture, and rail transport to support the war effort.
By 1863, the Union organized black men to fight, influenced by figures like Frederick Douglass, Lincoln Administration, and William Lloyd Garrison
Prior to the Emancipation Proclamation, there were Confiscation Acts in 1861 and 1862 that aimed to undermine the Confederacy's use of enslaved people.
The Emancipation Proclamation was issued on January 1, 1863, freeing slaves in rebellious states.
Lincoln justified it as a wartime measure to weaken the Confederacy, not as an abolitionist act.
The proclamation did not free slaves in the non-rebellious slaveholding states (Delaware, Kentucky, Maryland, Missouri) or Union-held territories.
Despite its limitations, the Emancipation Proclamation had a significant impact, spreading throughout the Confederacy.
Enslaved people sought out Union forces, viewing emancipation as permanent.
The Thirteenth Amendment in 1865 officially ended slavery in the United States.
The Republican Party had a progressive ideology regarding banking, finance, and infrastructure investment.
This ideology was well-suited to organizing and financing the war effort.
The Union government worked closely with industry and manufacturing to support the war.
The Confederacy struggled with centralization and unification due to its emphasis on states' rights.
The midterm elections of 1862 and the presidential election of 1864 were difficult for the Republicans.
Lincoln's reelection in 1864 was uncertain until the results came in.
By the spring and summer of 1863, Vicksburg, Mississippi was the last Confederate stronghold on the Mississippi River.
Grant laid siege to Vicksburg, cutting off supplies and preventing Confederate soldiers from escaping.
On July 4, 1863, nearly 30,000 Confederate soldiers surrendered at Vicksburg after a month and a half siege.
The surrender marked a significant victory for the Union in the Western Theater.