The military tactic that the Union implemented in the months following Fort Sumter was a Naval blockade.

In the months after the Battle of Fort Sumter, the Union established a naval blockade as a crucial military strategy. This tactic sought to sever Southern ports from trade and supplies, thereby severely undermining the Confederacy's economy and military strength. Referred to as the Anaconda Plan, the blockade aimed to suffocate the South by blocking the import of weapons and vital goods, while also restricting the export of cotton and other resources. This strategy not only diminished the Confederacy's capacity to maintain its military operations but also intensified economic pressure, playing a significant role in the Union's eventual triumph in the Civil War.