“What Constantine ordered, however, was not a cross-shaped object but rather a long, gilded spear, bisected by a horizontal bar, topped with a golden and gemmed wreath that surrounded two letters, chi and rho: the first two letters of Christos. Like Lactantius, Eusebius explains that this looked like the intersection of the Latin letters X and P. In addition, a banner hung from the bar, embroidered with portraits of the emperor with his two sons.”