It was late at night when Michael and the citizens of his territory made a memorial for the deceased. Their corpses were burned and tributes were made to cleanse their souls and offer them some last words hoping for a safe journey to the afterlife.
Michael made a long speech to honor the deceased and praise the survivors. He feasted with the survivors and spent hours with them near the big campfire to have one last meal together with the souls of the deceased. Being with the other subjects and warriors didn't make him forget the deceased, but it showed him clearly that his Summons were no different from real human beings.
The Origin Expanse might have resurrected them from death in order to turn them into loyal subjects of their Lords, but that didn't make them any less humane.
