Which sphere in Paradiso is reserved for martyrs and warriors of faith?

The sphere in Paradiso reserved for martyrs and warriors of faith is the Sphere of Mars.

Dante’s Heaven is arranged as a series of celestial spheres, following the medieval geocentric cosmos. Mars is the fifth sphere, and its traditional association with the god of war makes it an apt home for souls who displayed spiritual courage through combat or sacrifice. Dante links these blessed souls with the virtue of fortitude.

In Paradiso, the lights formed by the warriors’ souls create a vast Greek cross across the red planet. Dante encounters his ancestor Cacciaguida there, a Florentine who tells him about his family, Florence’s earlier civic life, and the exile that awaits him. Other figures associated with this sphere include Joshua, Judas Maccabeus, Charlemagne, Roland, and Godfrey of Bouillon.

A common mix-up is Saturn, which houses contemplatives, or Jupiter, which houses just rulers. Venus is associated with those influenced by love, so it is not the sphere of religious warriors.