What is sanguinala?

Sanguinala is an annual celebration in the Warhammer 40,000 universe that honors the Imperial Saint Sanguinius. It takes place on the planet of Baal and in other Imperial worlds where the Blood Angels chapter of Space Marines and their successors are stationed. Sanguinala celebrates the victory of Sanguinius against the arch-traitor and his minions on Baal and is marked by rituals and offerings to honor his sacrifice. It typically involves feasting, parades, religious services, and displays of martial prowess by the Blood Angels and their successors. Sanguinala is an important event in the Blood Angels' cultural calendar, and its celebration is seen as a vital aspect of their combat readiness and spiritual wellbeing.