Fourth Battle of RuusanCanonLegendsInfinities Sources The Dark Side SourcebookAppearancesDarth Bane: Rule of Two (Mentioned only) (First identified as Fourth Battle of Ruusan) (Unknown)Unknown UnknownNoneDarth Bane: Rule of Two audiobook (Mentioned only) (First identified as Fourth Battle of Ruusan) (Unknown)Unknown UnknownNone