Complex sentence: In the fictional "Warhammer 40,000" universe, the Leman Russ is a heavy battle tank, named after Primarch Leman Russ of the Space Wolves, is the main line tank for the Imperial Guard.
Split into simpler sentences: In the fictional "Warhammer 40,000" universe, the Leman Russ is a heavy battle tank, named after Primarch Leman Russ of the Space Wolves. It is the main line tank for the Imperial Guard.