Among the planks of the Republican platform of 1896 was one asserting the duty of the United States to "use its influence and good offices to restore peace and give independence to Cuba," but there is no evidence that President McKinley contemplated a forcible intervention when he organized his Cabinet. John Sherman had, as Senator, spoken freely in sympathy with Cuba. As Secretary of State he recalled Hannis Taylor from Madrid and sent out General Stewart L. Woodford, with instructions looking toward a peaceful mediation. Not until the autumn of 1897 was it possible to press the Cuban matter, for Spain suffered two changes of Ministry and the murder of a Prime Minister. But by the end of September Spain had been notified that McKinley hoped to be able to give positive assurances of peace to Congress when it met in December.
A Liberal Government, headed by Sagasta, took office in Spain in October, 1897. It declined mediation by the United States, retorting that if the United States were to enforce the law of neutrality the war would soon cease. It recalled Weyler, however, sent out a new and milder governor-general, modified the reconcentrado orders that had so enraged the United States, and issued, on November 25, a proclamation establishing a sort of home rule, or autonomy, for Cuba. In the winter of 1897 the Spanish Government was endeavoring to give no excuse for American intervention, and at the same time, by moderate means, to restore peace in Cuba. The Spanish population of Cuba opposed autonomy and made the establishment of autonomous governments a farce. In January there were riots in Havana among the loyal subjects. Outside the Spanish lines the rebels laughed at autonomy, for they were determined to have independence or nothing. Woodford, in touch with the Spanish Government, believed that in the long run the Spanish people would let the Queen Regent go beyond autonomy to independence, and that with patience Cuba might be relieved of Spanish control.
There was no positive news for Congress in December, 1897, but by February the conditions in Cuba had become the most interesting current problem. The New York Journal obtained and published a private letter written by the Spanish Minister, De Lome, in which McKinley was characterized as a temporizing politician. The Minister had no sooner been recalled than the Maine, a warship that had been detached from the North Atlantic Squadron, and sent to Cuba to safeguard American citizens there, was destroyed by an explosion in the harbor of Havana, on February 15, 1898. There was no evidence connecting the destruction of the Maine with any person, but unscrupulous newspapers made capital out of it, using the catch-phrase, "Remember the Maine," to inflame a public mind already aroused by sympathy and indignation. After February, only a determined courage could have withstood the demand for intervention and a Spanish war.
The negotiations with Spain continued rapidly in the two months after the loss of the Maine. McKinley avoided an arbitral inquiry into the accident, urged by Spain, but pressed increasingly for an end of concentration, for relief for the suffering population, and for full self-government. He did not ask independence for Cuba, and every demand that he made was assented to by Spain. Notwithstanding this, on April 11, 1898, he sent the Cuban correspondence to Congress, urged an intervention, and turned the control of the situation over to a body that had for two years been clamoring for forcible interference. Nine days later Congress resolved, "That the people of the Island of Cuba are, and of right ought to be, free and independent." On April 21 the Spanish War began.
The administrative branches of the Government had made some preparations for war before the declaration. The navy was small but modern. It dated from the early eighties, when Congress was roused to a realization that the old Civil War navy was obsolete and began to authorize the construction of modern fighting ships. The "White Squadron" took shape in the years after 1893. Only two armored cruisers were in commission when Harrison left office, but the number increased rapidly until McKinley had available for use the second-class battleships Maine and Texas, the armored cruiser Brooklyn, and the first-class battleships Iowa, Indiana, Massachusetts, and Oregon. From the beginning of the McKinley Administration these, as well as the lesser vessels of all grades, were diligently drilled and organized. The new Assistant Secretary of the Navy, Theodore Roosevelt, had foreseen and hoped for war. He spent the contingent funds on target practice, and had the naval machine at its highest efficiency when the Maine was lost. On March 9, 1898, Congress, in a few hours, put $50,000,000 at the disposal of the President for national defense, and the navy spent its share of this for new vessels, transports, and equipment. The vessels in the Orient were mobilized at Hongkong under the command of Commodore George Dewey; the Oregon, on station in the Pacific, was ordered home by the long route around the Horn; the ships in the Atlantic were assembled off the Chesapeake. Part of the latter were organized as a flying squadron, for patrol, under Commodore Winfield Scott Schley, while toward the end of March Captain William T. Sampson was promoted over the heads of many ranking officers and given command of the whole North Atlantic Squadron, including the fleet of Schley.
Congress debated a new army bill while the navy was being prepared for war. Not until April 22 did it permit the enlargement of the little regular army of 25,000. Until war had begun the volunteers, of whom some 216,000 were taken into the service, could not be called out or made ready for the field. Some preparations were made within the War Department, but the little staff of clerks, used to the small routine of the peace basis, and having no plan of enlargement or mobilization worked out, made little headway. The navy was ready to strike the day war was declared, but the army had yet to be planned, recruited, clothed, drilled, and transported to the front. The men of the navy knew their duty and were ready for it; in the army thousands of civilians had to blunder through the duties of strange offices. William J. Bryan accepted the colonelcy in a Nebraska regiment. Theodore Roosevelt resigned his office in the Navy Department to raise a regiment of volunteer cavalry. Politicians struggled for commissions for themselves and friends. Civil War veterans fought for reappointment, and enough soldiers of the Confederacy put on the blue uniforms, or sent their sons, to show that the breach had been healed between the North and South. It was an enthusiastic rather than an effective army that was brought together in the two months after the war began.
Cuba, the cause of the war and its objective, was the center of the scheme of strategy. The navy was called upon to protect the Atlantic seaboard from the fleet of Spain, which was reputed to be superior to that of the United States. It had also to maintain a blockade of Cuba and prevent the landing of reinforcements until the army could be prepared to invade the island. Dewey's fleet in the Pacific was ordered to destroy the Spanish naval force in the Philippine Islands, and moved immediately upon Manila when Great Britain issued her proclamation of neutrality and made it impossible to remain longer in her waters at Hongkong.
On the morning of May 1 Dewey led his squadron past the forts, over the submerged mines, and up the channel of Manila Bay. The Spanish forces in the islands, already contending with a native insurrection, were helpless before evening, having lost the whole fleet. Dewey was left in a position to take the city when he chose, and sent home word to that effect. He waited in the harbor until an army of occupation had been got ready, hurried to the transports at San Francisco, and sent out under General Wesley Merritt. He brought the native leader Aguinaldo back to the islands, whence he had been expelled, to foment insurrection. The first American reinforcements arrived at Manila by the end of June. On August 13 they took the city.
Before the news of the surprising victory at Manila reached the United States there was nervousness along the Atlantic Coast because of the uncertain plans of the main Spanish fleet, which had left the Cape Verde Islands, under Admiral Cervera, on April 29, and which might appear off New York or Boston at any time. The naval strategists knew it must be headed for the West Indies, but seaboard Congressmen begged excitedly for protection, and the sensational newspapers pictured the coast in ruins after bombardment.
To Sampson and Schley was assigned the task of guarding the coast, keeping up the blockade, and finding Cervera's fleet before it reached a harbor in American waters. San Juan, Santiago de Cuba, Cienfuegos, and Havana were the only probable destinations. Sampson watched the north side of Cuba and Porto Rico, while Schley and the flying squadron moved to Key West, and on May 19 started around the west end of Cuba to patrol the southern shore. On that same day, entirely unobserved, Cervera slipped into the port of Santiago, at the eastern extremity of Cuba. When the rumor of his arrival reached Sampson at Key West, Schley was already well on his way and firm in his belief that Cervera was heading for Cienfuegos.