What important battles did the Union win to take over Fort Sumner?

The Union did not win any specific battles to take over Fort Sumter, as the fort was actually surrendered to Confederate forces in April 1861, marking the start of the Civil War. However, the Union's efforts to regain control of Fort Sumter culminated in the 1863 Battle of Fort Sumter, where they attempted to bombard the fort but were unsuccessful. Ultimately, the fort remained in Confederate hands until it was evacuated in February 1865 as Union forces advanced in the South.