[1] The band released their debut album Animal House before the end of the year, after which Szigeti, Rittel and Franke were replaced by Andy Susemihl, Thomas Smuszynski (after a brief tenure for former Accept bassist Dieter Rubach)[2] and future Accept drummer Stefan Schwarzmann, respectively.
[1] Dieth and Voss were soon replaced by Bullet members Jürgen Graf and Fitty Wienhold, respectively, for the band's next album Solid.
[6] Milani remained until January 2005, when he left the band for "personal reasons" and was replaced by Francesco Jovino, who had earlier filled in for the regular drummer during a tour the previous autumn.
[10] Jovino left for "personal reasons" in December 2014,[11] with Dirkschneider's son Sven taking his place the following February.
[16] Shortly after the release of Steelfactory, long-time bassist Fitty Wienhold announced his departure from U.D.O., but assured fans that he would continue to offer his support in the form of songwriting if requested.