Via Starwars.com:

THE STAR WARS GALAXY IS FILLED WITH WARRIOR CULTURES, THOUGH NO TWO ARE THE SAME.

The Star Wars universe is populated with a variety of interesting characters and species, many of whom are considered to be renowned warriors. Several stand out from the rest of the galaxy, including the Wookiees, Trandoshans, Tusken Raiders, and the humans of Mandalore. Each has a rugged reputation, but their ferocity in combat is tempered by the cultural imperatives present in the ancestors of their people.

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