MLP/Warhammer 40K crossover, part 5. The pieces are placed. The battle lines have been drawn. The 38th Company and Equestria fight relentlessly against the alien menace (the other one, that is), but the odds are hardly in their favor.
MLP/Warhammer 40K crossover, part 4. The Tau have left, but now a new threat threatens to overrun Equestria and its home planet. This time, though, hope lay with the darker powers...
MLP/Warhammer 40K crossover, part 3. As relations between Equestria and 38th Company wax and wane, the Tau warriors of the Sept Lamman put the final phase of their plan into action.
MLP/Warhammer 40K crossover, part 2. Twilight is charged with driving the Iron Warriors from Equestria and their world. But the Tau aren't out of the fight yet.
MLP/Warhammer 40K crossover. Chaos Space Marines from the piratical 38th Company have engaged Tau forces around a planet rich with alien life, magic, and... friendship? I guess? Weird.