The Battle of Sullivan's Island took place during a critical phase of the American Revolutionary War when British forces aimed to seize control of Charleston, a key Southern port. The British strategy involved a combined land and naval assault, with the intent to cut off American supply lines and establish dominance in the Southern colonies. On June 28, American defenders, numbering around 400 men under the command of Colonel William Moultrie, fortified Fort Sullivan with materials available at the time, making it strategically advantageous against the planned British assault.

As dawn broke, British naval ships, led by Admiral Sir Peter Parker, began bombarding the fort, expecting an easy victory. However, the Americans demonstrated exceptional resilience. They effectively utilized the fort's defenses and returned fire using cannons, managing to inflict significant damage on the British fleet. Despite a heavy onslaught and the fort being caught ablaze, the determination of the American forces proved instrumental in thwarting British objectives.

The battle concluded with the British withdrawing, marking a vital moment of triumph for the American cause. As news of the victory spread, it sparked celebrations in Charleston and beyond, contributing to a growing spirit of independence across the colonies. In recognition of this victory, Carolina Day was established, celebrating the bravery and dedication of those who fought at Sullivan's Island.