During the Seven Years Years War, the Spanish sided with the French, and battled against Britain in the North American theatre of the war called the French and Indian War.
The French agreed to give Louisiana and Flordia to Spain as a result of helping them against the British, yet Flordia was ceded by by the Spanish to the British. Therefore, during the Revolutionary War, the Spanish empire fought back against the British to redeem their loss of Flordia to the British After the French and Indian War. General Bernardo de Gálvez was instrumental in securing victories against the British during the Revolutionary War.
Hamilton Historical Records 