The 'Today We Fight Under Our New Banner' meme features a dramatic scene from the 2014 film 300: Rise of an Empire, where the Athenian general Themistocles presents a blood-stained flag to his troops. This powerful visual has become a staple for internet users wishing to announce a sudden change in direction, a rebranding, or a humorous new obsession. It is frequently utilized in sports, gaming, and corporate culture to mock the seriousness of switching loyalties or adopting a new 'personality' overnight. The template's popularity stems from its cinematic intensity contrasted with the often trivial or absurd symbols photoshopped onto the flag.