Battle of Santiago de Cuba Cuba, leaving civil order to the military government that the United States established. The U.S. Army under the overall administration of General Leonard Wood governed the island for some time afterwards and, with help, removed many of the mines laid in the bay. The immediate effect of the Battle of Santiago and the larger Spanish–American War, then, was the end of any noteworthy Spanish naval presence in the New World. In the imperial vacuum left by Spain's New World empire, the United States now exerted considerable influence both in annexing formal territories such as Puerto Rico, Guam, and the Philippines
Battle of Santiago de Cuba prisoners were returned to Spain with their “honors of war” on American ships. The battle was the end of any noteworthy Spanish naval presence in the New World. It forced Spain to re-assess its strategy in Cuba and resulted in an ever-tightening blockade of the island. While fighting continued until August, when the Treaty of Paris was signed, all surviving Spanish capital ships were now husbanded to defend their homeland leaving only isolated units of auxiliary vessels to defend the coast. Uncontested U.S. control of the seas around Cuba made resupply of the Spanish garrison impossible and its surrender inevitable.