The capture of Fort Charlotte by Spanish forces marked a pivotal moment during the American Revolutionary War, showcasing Spain's strategic military planning and ambitions in North America. The fort, located in Mobile, Alabama, was the last remaining British post that posed a threat to New Orleans. With Spanish Louisiana under the command of Governor Galvez, the campaign to seize Fort Charlotte began with a thorough understanding of the fort's vulnerabilities and the British military's supply lines. The Spanish forces, backed by local allies, executed a siege that involved both land and naval forces, demonstrating collaboration and coordination among various units.

The siege lasted several weeks, with Galvez employing tactics that included bombarding the fort and cutting off supplies to the British defenders. The Spanish fleet, led by Captain Juan José de Sandi, played a crucial role in the naval blockade, which restricted reinforcements and resources from reaching the beleaguered garrison. Ultimately, on March 14, the British forces, unable to hold out any longer under the relentless assault and facing insurmountable odds, formally surrendered Fort Charlotte.

This victory not only solidified Spanish control over Mobile but also served as a morale booster within the Spanish empire and among its allies in the American struggle against British authority. By removing a significant threat at this strategic location, Spain secured its territorial integrity and influence over the region, facilitating greater defense capabilities for New Orleans, which was critical for trade and military logistics during the war.