#hol beloth

I’m not so sure they did. They sent some 50 000 Word Bearers there, and most of them died - fair enough. But they killed almost 120 000 Ultramarines and injured tens of thousands more to the point where they were combat-ineffective, and many of the Ultramarine’s leaders were among those killed. The Ultramarines lost many of their heavy warships as well, and the Ultramarines had never been in possession of a particularly impressive fleet. To me, this reads like a tactical loss (since they didn’t kill Guilliman or wipe out the entire UM force) but a strategic win for the Word Bearers (since they halved the Ultramarines Legion and created the Ruinstorm).