How did the union strategies its third attempt to capture Charleston?

During its third attempt to capture Charleston in 1863, the Union employed a strategy that combined a naval blockade and coordinated land assaults. General Quincy Adams Gillmore led a series of attacks on Confederate defenses, utilizing heavy artillery and a systematic approach to weaken fortifications like Fort Wagner. The Union aimed to cut off supplies and reinforce their position through a joint operation involving naval support from the South Atlantic Blockading Squadron. Despite their efforts, the city remained in Confederate hands until the end of the war.