Speaking to The Root, Tarantino said that "there's something about this that would suggest a trilogy. My original idea for Inglourious Basterds way back when was that this [would be] a huge story that included the [smaller] story that you saw in the film, but also followed a bunch of black troops, and they had been f--ked over by the American military and kind of go apes--t. They basically -- the way Lt. Aldo Raines (Brad Pitt) and the Basterds are having an "Apache resistance" -- [the] black troops go on an Apache warpath and kill a bunch of white soldiers and white officers on a military base and are just making a warpath to Switzerland."
He added: "So that was always going to be part of it. And I was going to do it as a miniseries, and that was going to be one of the big storylines. When I decided to try to turn it into a movie, that was a section I had to take out to help tame my material. I have most of that written. It's ready to go; I just have to write the second half of it.
"That would be the third of the trilogy. It would be [connected to] Inglourious Basterds, too, because Inglourious Basterds are in it, but it is about the soldiers. It would be called Killer Crow or something like that."