What historic conflict took place in Jefferson County during the Civil War?

The Battle of Mill Springs, which occurred in January 1862, is noteworthy as it marked the first significant Union victory in the Civil War in Kentucky. This battle took place in Pulaski County, which is adjacent to Jefferson County, and plays a significant role in understanding the military actions that impacted the entire region, including Jefferson County. The Union victory at Mill Springs was pivotal in securing control over eastern Kentucky, allowing Union forces to establish a stronger foothold in the state, which was crucial for further operations.

Other battles listed, like Shiloh, Gettysburg, and Antietam, while important in the context of the Civil War, took place in different locations and are not specifically tied to Jefferson County or have direct implications for the region in the same way as Mill Springs. Each of those battles had broader significance and larger military implications but are less relevant to the specific question about conflicts in Jefferson County during the Civil War.