Spanish-American war timeline By alanna_d123 Period: Feb 1, 1898 to Aug 12, 1898 Spanish-American War Feb 15, 1898 The USS Maine explodes off the coast of Havana Apr 9, 1898 Spain announces an armistice with Cuba Apr 20, 1898 McKinley asks for declaration of war with Spain May 1, 1898 Battle Of Manlia Jul 1, 1898 The Battle of San Juan Hill Jul 3, 1898 The start of the Siege of Santiago Jul 17, 1898 The Spanish surrender at Santiago. Aug 12, 1898 The U.S. and Spain sign the Protocol of Peace, ending hostilities between the two.