These 'beasts' make pretty good opponents. Although they don't feel fear, anger, or any emotional shifts, which means fighting them doesn't have the same thrill as fighting intellectual species. But the key is, these beasts are numerous, and they're not cunning, so when they fight, they really fight, setting up to battle until you're satisfied.
So what's not to like? Abundant and fulfilling, waaagh on!
Of course, after these two fierce races started fighting, they began committing more and more forces against each other, and they certainly weren't kind to humans either, casually obliterating nearby human worlds. Sifleg himself nearly got caught but managed to escape in the end.
But he didn't run far, staying just on the edge of the battlefield observing with a small fleet.
Then, humans witnessed a staggering and intense war.
