The Adolescents had broken up in August 1981, two months before the release of their
Welcome to Reality EP. Guitarist
Rikk Agnew, who had left the band earlier that year after the release of their debut album,
Adolescents, joined the
gothic rock band
Christian Death, playing on their 1982 album
Only Theatre of Pain, and released a solo album,
All by Myself (1982). Singer
Tony Brandenburg formed a new band, the Abandoned, who released one album,
Killed by Faith (1985). "Casey wanted to keep D.I. going, and I lost interest", said Frank. The new Adolescents lineup entered Advanced Media Systems in
Orange, California in the summer of 1986 to record their new album, co-produced by the band members and Gordon R. Cox. In addition to "The Liar" and "Peasant Song", they recorded five new songs: "Brats in Battalions", "I Love You", "Skate Babylon", "Marching with the Reich", and "She Wolf". They also rewrote one of the band's early songs, "Do the Eddie"—a joke song from a July 1980 demo tape written about Eddie Joseph of the band Eddie and the Subtitles, who had
engineered the demo and subsequently became the band's manager—as "Do the Freddy". The remainder of the album consisted of new recordings of all three songs from the Adolescents' 1981 EP
Welcome to Reality ("Welcome to Reality", "Losing Battle", and "Things Start Moving"), and
cover versions of the traditional
folk song "
The House of the Rising Sun" and
the Stooges' "I Got a Right". Mike McKnight played additional guitar parts on "The Liar"; he would go on to join Soto and Hanson in their post-Adolescents band Joyride during the early 1990s, and join the re-formed Adolescents from 2008 to 2013, playing on the albums
The Fastest Kid Alive (2011) and
Presumed Insolent (2013). Brandenburg came up with the concept for
Brats in Battalions' cover art, a photograph of young boys holding various firearms. Cover Kids (from Left to Right) Jim Edlund, Jason Shad, Bill Verkamp, Kenny Wetzel, Aaron Calvert, Jim Getz. Picture taken at Rio Vista Park in Anaheim, California. ==Release and reception==