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• 1986: Founded in May 1986: Ralf Maunert, Reinhard Kruse, Franck Tiesing; Bloodsucker Demo (MC), Album “Satans Defloration Incorporated” at Scratchcore Records, Single live appearances in northern germany

• 1987: Single appearances in northern germany

• 1988: Album “Sign of the wicked”at Scratchcore Records, Franck Tiesing was replaced by Rainer Rage, “Sign of the wicked tour ‘88” germany

• 1989: Album “Mistreated” at Hot Blood Records

• 1990: European Tour 1990 (Italy, Hungary, Netherlands, Germany, etc)

• 1991: Czechoslowakian Tour ‘91; Split

• 2014: Reunion; Video “I don’t care”

• 2015: “Bloodsucker Demo 1986” is published as Vinyl edition by F.O.A.D-Records; European Tour 2015/2016 (Germany “Metal Assault”, Bulgary, Czech Rep., Slovakian Rep., Italy, etc)

• 2016: European Tour 2015/2016 (Germany “Keep it true”, Spain, Czech Rep., etc) Break (Ralf Maunert is still in the band, Christoph Olbrich joined the band

• 2017: Single appearances all over Europe (Czech Rep. “Extreme Obscene”, Germany, Bulgary, etc) Rainer Rage leaves the band; Daniel H. joins SDI and plays his first gig (the tynfest/Czech Republic); Demo “Ballrun Demo 2017”

• 2018: Video recordings, Audio Recordings, Megamoshiberian tour 2018

• 2019: Festival gigs in Czech rep., Spain, Portugal.

• 2020: New Album “80s Metal Band” as CD/LP/MC released at MDD-Records. The “80s metal band tour 2020” starts in with the album release show in Kassel (Germany) leading to Portugal, Spain, Denmark, Poland, Czech Republik, Austria, Slovakia, Germany, Bulgaria (tbc.). Chris Friedl joins SDI on guitar. The 80s metal tour starts in Spain and Portugal. Just in the middle of their tour SDI is forced to abort the tour because of the corona virus regulations of the Spanish government. In June 2020 we recorded videos of every (!) song of the "Sign of the wicked" Album  on video. The remastered Album "Sign of the wicked" has been released in October by MDD-Records.

• 2021: MDD-Records release a remastered version of the "Mistreated"-Album. It contains two new songs the band re-recorded in 2020. Videos for "Violence", "The Deal", "… in the ass" and "I don't mind" have been released. In August the band plays at the Josefov Festival (CZ) in August (+ some additional gigs). The "Bloodsucker demo 1986" is re-released by "Under Fire"-records (Mexico) on CD for the first time. The book "Cry to for metal" by José Luis Cano Barrón (about all the bands of GAMA-Records in the 80s, including 8 pages of SDI) is released in Mexico and Poland. In December 2021 the tour in Spain that was interrupted by Corona in spring 2020 has been played to the end. 

• 2022: In April, the "Post Pandemic Tour 2022" starts with performances in the Czech Republic, Slovakia, Austria, Hungary, and for the first time in Poland, Denmark (Heavy Agger Festival) and Finland (Metal Capital Festival).

• 2023: Highlights: April: Gothoom Festival in Slovakia, June: Basinfire-Festival (CZ), August: Brutal Assault

• 2024: W A C K E N !!!!!!!!