Inglourious Basterds is entirely fictional. The director, Quentin Tarantino, crafted the story for cinematic entertainment, drawing inspiration from various sources but not real events.
Inglourious Basterds is not based on a real story. It's a work of imagination by the filmmakers. However, it might draw inspiration from historical events and settings, but the plot and characters are fictional.
Inglourious Basterds is purely fictional. The plot and characters are crafted by the filmmakers' imagination rather than being based on actual events. It takes creative liberties to tell an engaging story.