[quote=“Sgt. Geoi Donowitz”]Yeah, we’ve discussed this particular point somewhere else here. He knew who she was. He ordered her a glass of milk, and made her wait for the creme, which is considered not kosher by Jewish people. He knew that if the Basterds didn’t succeed on this particular night, that she would. And if she didn’t, the Basterds would eventually succeed, and he wanted a get out of jail free card to play, so he allowed them to go.[/quote]
As good as his investigative skills were, I doubt he knew anything about Shosanna’s plan to burn down the cinema. It did seem to me as though he knew who she really was, but only being of consequence with regards to being an enemy of the state.