Actually the Seminoles were some persistent and fierce-some buggers. I can see why Florida State wants to think of themselves as Seminoles.
The chant originated with drunk Frat boys, if we can believe this:
https://www.tomahawknation.com/2012/5/1/...as-started
Back to the real Seminoles: The United States spent more than $20 million fighting the Seminoles. There were three wars.
The Second Seminole War was the longest and most expensive war between the United States and all Native Americans combined. A violent and miserable conflict, the war began in 1835 after an Indian leader named Osceola murdered a U.S. official and another Indian leader who demanded he acquiesce to U.S. demands.
One thousand, four hundred and sixty six U.S. military personnel would lose their lives, 14 percent from disease. According to one account, soldiers and officers were “sent to die, like dogs, in the swamps of Florida.” They ate horses. They drowned. They went insane. They committed suicide. Their mission was to remove approximately 5,000 natives who had elected to remain in Florida despite President Andrew Jackson’s decree that all Native Americans east of Mississippi be removed.
By 1842, U.S. officials decided the war was too unpopular and too costly to continue.