https://en.wikipedia.org/wiki/Battle_of_San_Juan-Hill
https://en.wikipedia.org/wiki/Battle_of_Manila_(1898)
https://library.georgetown.edu/special-collections/manuscripts
https://www.usmcu.edu/Portals/218/US%20Marines%20in%20Battle%20Guantanamo%20Bay.pdf
https://www.loc.gov/resource/pga.01889
https://en.wikipedia.org/wiki/Puerto_Rico_campaign