From Lexicanum

The Wars of Apostasy or the Terran Crusade was the crusade or military campaigns waged by the Black Templars during the Age of Apostasy.

After his Chapter's keeps in the Segmentum Solar were bombarded by the fleet of the insane High Lord Goge Vandire, the Chapter High Marshal Sigenandus was enraged, declaring a crusade to be launched against Vandire on Terra.

See also

• Crusade

Sources

• Codex: Black Templars
• White Dwarf 312(uk)