While Revenge of the Sith shows us a limited view of Order 66 within the Jedi Temple, The Bad Batch would be an opportunity to show a frontline view of the carnage wrought upon the guardians of peace and justice. Fans of the classic 2005 video game Battlefront II will remember Operation Knightfall as the mission requiring the player to assist Anakin Skywalker (the newly christened Darth Vader) in his assault on the temple. In Legends, this was the codename for Order 66 within the Grand Army of the Republic, specifically the march on the Jedi Temple. This theory also calls for a view of Operation Knightfall. The Bad Batch could depict what happened to the likes of Luminara Unduli and Quinlan Vos, both of whom are confirmed to be on the Wookiee homeworld during the fall of the Republic. While we know the fates of certain players in this specific event (Commander Gree, Chewbacca, Master Yoda), there are still several characters involved in this conflict whose destinies are clouded. This could easily be the jumping off point for the show, with Order 66 being initiated while Clone Force 99 are defending the Wookiees from the CIS forces. There is even some speculation (and evidence to back it up) that the Bad Batch are involved with the defense of Kashyyyk. Considering how the last season of The Clone Wars ended with 'Victory and Death,' it would be hard to imagine this show picking up anywhere else.

Their full theory (which can be found here) places the Great Jedi Purge and Order 66 as the cornerstone of the first season's plot. Reddit user SomeGuySW has proposed a theory that is very specific about the timeline of events within the show.

Star wars battlefront 2 knightfall