Lieutenant Aldo Raine, Colonel Hans Landa, Shosanna Dreyfus and the other characters are all fictional. The only historic character is Adolf Hitler.

While there were Jewish soldiers in the US Army, the specific concept of a dedicated unit solely focused on terrorizing and killing Nazis in the manner depicted is fictional. It's a core element of the film's alternate history narrative.

While baseball bats were used in combat in various conflicts, the Bear Jew's specific use of one as his primary weapon and the exaggerated brutality associated with it is a stylistic choice for the film and not historically accurate.

While there were instances of atrocities on both sides of World War II, the systematic scalping of Nazi soldiers by a specific unit, is fictional.

Operation Kino, the plan to assassinate Nazi leaders at a film premiere, is entirely fictional. It's the driving force behind the film's plot and a central element of its alternate history.

The burning down of a cinema with Nazi leaders, and subsequent conclusion to World War II, is completely fictional.

The film is set during World War II, a real historical event. The backdrop of the war provides the context for the fictional narrative.

The film acknowledges the very real atrocities committed by the Nazis. While the specific actions of the 'Basterds' are fictional, the context of Nazi brutality is historically accurate.

The French Resistance was a real historical movement. The film's depiction of some resistance activities, though intertwined with fictional elements, is grounded in this historical reality.

The Nazis did use propaganda films as depicted in the movie. This was a real tactic for disseminating their ideology.

While the film focuses on specific fictional events, it captures some aspects of the fear and tension that existed in occupied France.