First chronological appearance of Saw Gerrera, later played by Forest Whitaker in Rogue One: A Star Wars Story.
"A War on Two Fronts" and the three episodes that follow it were originally planned to open season five before the decision was made to start the season with "Revival".
The red symbol on Saw Gerrera's shoulder and neck armor as well as some of the Rebel helmets is part of the Rebel Alliance Logo first seen in Star Wars: Episode IV - A New Hope (1977). Since Saw is part of a group of rebels early in Star Wars history, the idea is that his symbol was combined with Sabine Wren's 'Starbird' symbol as seen in the follow up series Star Wars: Rebels (2014) to form the Alliance logo.
The planet Onderon first appeared in the Dark Horse comic book series 'Tales of the Jedi' and was also a location in the video game Star Wars: Knights of the Old Republic II - The Sith Lords (2004).
The 'Jedi fortune cookie' message that opens the show reads "Fear is a malleable weapon."