Though the unit was close to the embarkation point where troops were being loaded for service in Cuba, at Port Tampa the unit's advance came to a halt. The 159th would remain in Port Tampa until August 30, when the was ordered back to Camp Mount at Indianapolis. An armistice had been agreed to on August 13, effectively ending the war's fighting.
The unit was given a month's furlough, from September 10 to October 10, 1898. On November 1, the unit was mustered out of service. The war ended officially on December 10, 1898 with the Treaty of Paris.
Clerk of Joint Comittee on Printing, The Abridgement of Message from the President of the United States to the Two Houses of Congress, (Washington: Government Printing Office, 1899), Vol 3, p. 493.
Wright, General Marcus J., Wright's Official History of the Spanish
American War. (Washington: War Records Office 1900) 319-320.