Red Cross of Constantine
The Order is a Degree of Christian Knighthood and Candidates must be both Master Masons and Companions of the Royal Arch. At their Installation they learn of the miraculous victory of Constantine the Great over Emperor Maxentius and his subsequent conversion to Christianity. The Candidate then learns of the banner Constantine, adopted after his vision in the sky, after which they become Knights of the Red Cross of Constantine.
The Appendant Orders are conferred at a separate Divisional meeting. The first in a Sanctuary of Knights of the Holy Sepulchre refers to the discovery of the true cross by St Helena the mother of Constantine in the period between the Crucifixion and Resurrection of Christ. The second part of the Ceremony concerns a discovery of a book of singular importance and the formation of the Knights of St John the Evangelist at the time of the Roman Emperor Julian the Apostate.
The Grand Imperial website can be viewed here