The Spanish American War was fought for four months in 1898 between the United States and Spain. The main catalyst being the Cuban fight for independence from Spain. The war was fought in the Pacific and the Caribbean. Hostilities ended on 12 August 1898 with the formal peace treaty being signed in Paris, France, on 10 December 1898. The Treaty of Paris gave the Spanish colonies of Guam, Puerto Rico and the Philippines to the United States and effectively ended the Spanish Empire. It also granted Cuba her independence, but it was not until 1902 that Cuba became self-governing.
- 1st US Cavalry, 1st, 2nd and 3rd July 1898
- 1st US Volunteer Cavalry, 1st, 2nd and 3rd July 1898
- 2nd Artillery, 1st, 2nd and 3rd July 1898
- 2nd Infantry, 1st, 2nd and 3rd July 1898
- 2nd Massachusetts Volunteer Infantry, 1st, 2nd and 3rd July 1898
- 3rd Cavalry, 1st, 2nd and 3rd July 1898
- 3rd Infantry, 1st, 2nd and 3rd July 1898
- 4th Infantry, 1st, 2nd and 3rd July 1898
- 6th Cavalry, 1st, 2nd and 3rd July 1898
- 6th Infantry, 1st, 2nd and 3rd July 1898
- 7th Infantry, 1st, 2nd and 3rd July 1898
- 8th Infantry, 1st, 2nd and 3rd July 1898
- 9th Cavalry, 1st, 2nd and 3rd July 1898
- 9th Infantry, 1st and 2nd July 1898
- 10th Cavalry, San Juan Hill, July 1898
- 10th Infantry, 1st, 2nd and 3rd July 1898
- 12th Infantry, 1st, 2nd and 3rd July 1898
- 13th Infantry, 1st, 2nd and 3rd July 1898
- 16th Infantry, 1st, 2nd and 3rd July 1898
- 17th Infantry, 1st, 2nd and 3rd July 1898
- 21st Infantry, 1st, 2nd and 3rd July 1898
- 22nd Infantry, 1st, 2nd and 3rd July 1898
- 24th Infantry, 1st, 2nd and 3rd July 1898
- 25th Infantry, 1st, 2nd and 3rd July 1898