Who had more soldiers north or south?

During the American Civil War, the North (Union) had significantly more soldiers than the South (Confederacy). The Union had a population of about 22 million, allowing for a larger recruitment base, while the Confederacy had around 9 million, including 3.5 million enslaved individuals who were not part of the fighting force. By the end of the war, the Union had mobilized approximately 2.2 million soldiers compared to the Confederate's roughly 1 million. This disparity in troop numbers played a crucial role in the outcome of the war.