SOUTH CAROLINA SECEDES FROM THE UNION

South Carolina secedes from the Union

When delegates in South Carolina voted on December 20th, 1860 to leave the Union, they set in motion a crisis that would soon reshape the United States military. The decision followed the election of Abraham Lincoln and reflected deep disputes over slavery, federal authority, and the balance of power between states and the national government. In practical terms, secession raised immediate questions about federal forts, arsenals, and custom houses scattered across the South. United States Army officers faced painful choices as some resigned to join their home states while others stayed under national colors. The struggle over installations such as Fort Sumter in Charleston Harbor foreshadowed the shooting war that would follow. For the armed forces, this political act marked the beginning of a period in which loyalty, command structure, and even the map of the country would be contested by force.