 The album 's cover art was directed by John Gillespie . John Holmstrom and guitarist Johnny Ramone both worked on illustration , with the entire back cover contemplating a military theme , while the inner sleeve artwork depicted many of the themes portrayed in songs . The subject matter of songs varied throughout the album , though nearly all the tracks on the album incorporated humor into the lyrics . The musical style showed more of a surf rock influence , and many songs had minimal structuring . 
