Speaking on Full Metal Jackie's nationally syndicated radio show, Megadeth frontman Dave Mustaine said this song was written "about arson." He explained: "[Megadeth drummer] Shawn [Drover] had a song that he and I wrote together, [and Megadeth guitarist] Chris [Broderick] had a little bit to do with it [as well] - so we've got the first time all three of us are writing together. Shawn's tentative title was 'Face Melter' and I went, 'That's such a stupid title,' so I went, 'How about we just call it 'Ball Buster'?' just to bust his balls on it, right? So we had that as a funny title for a while, but that one ended up being called 'Built For War.'"