Burn!

In 1844, a British mercenary helps the revolting slaves of an Antilles island colony gain independence from Portugal, but later returns to hunt down a local rebel leader and former protégé.

Burn! is a 1970 drama war movie directed by Gillo Pontecorvo, starring Dana Ghia, Evaristo Márquez, Marlon Brando. It holds an IMDb rating of 7.1/10 from 6,433 votes and runs 1h 52m.