The siege of Pensacola, fought from March 9 to May 10, 1781, was the culmination of Spain's conquest of West Florida during the Gulf Coast Campaign of the American Revolutionary War. The siege was commanded by Bernardo de Gálvez, whose nearly 8,000 troops ultimately overran the British forces in the region. The success of the siege resulted in Gálvez' promotion to governor of West Florida and Louisiana.