Songfacts®:

• Bassist Matt Wachter says on ultimate-guitar.com that this is the stand-out track on the album for him. He explains: "The very first song on the album is 'Call To Arms,' and it's exactly what the title says. It's like a battle cry. It's so triumphant. It sounds like the beginning of a battle or a war, in a positive way. I think it just sets the tone for the record."
• Tom DeLonge explained that I-Empire is a continuation of their debut album We Don't Need to Whisper: "It is the second half of a story that we are doing. It's largely conceptual but it's also largely autobiographical. It's taking an idea that, of what the first record was about and communicating it through personal experience. So all the songs deal with human emotions - love, fear."
• The album's cover was painted by Drew Struzan, a top acclaimed poster artist who created the Star Wars posters in the 1970s.