Battle for Styx

Space Marines Portal Dark Angels

Tau Portal

The Battle for Styx occurred when the Tau Empire attempted to annex the Dark Angels Chapter's recruitment world of Styx in M41. When the Dark Angels recevied word of the invasion, The Rock itself arrived in orbit to defend Styx and the Dark Angels' response was so violent that the Tau's forces were wiped out in a single day.^[1]

Sources

• 1: Codex: Dark Angels (7th Edition) — In the Name of Absolution — Battle for Styx