The Red Cross of Constantine is an Order of Freemasons who have been made Royal Arch Masons. It is exclusively a Christian Order and by invitation only.
Its badge is a cross flouree', gules, depending from a ribbon purpure. On the arms of the cross are the letters I H S V for In Hoc Signo Vinces (in this sign conquer). Refering to the sign Constantine supposedly saw just before a decisive battle. Constantine supposedly converted to Christianity on his deathbed.
The Red Cross of Constantine is officially The Masonic and Military Order of the Red Cross of Constantine and the Orders of the Holy Sepulchre and St. John the Evangelist, the latter two of which are called the Appendant Orders. There are also two chair degrees conferred on the Viceroy and Sovereign of a Conclave, and two honorary orders: Knight Commander of Constantine and Knight Grand Cross. The governing body of the Order for the United States of America, the Republic of Mexico and the Republic of the Philipines and their territories is styled The United Grand Imperial Council of Knights of the Red Cross of Constantine and Appendant Orders for the United States of America, Mexico and the Philipines.
The purpose of the Constantinian Orders are to commemorate the first elevation of Christianity from the position of a despised and proscribed heresy to that of a legally recognized and honored religion, to cultivate the social virtues, appeal to the intellectual and moral qualities, preserve as far as possible the customs of the fraternity and bring about good fellowship and understanding between all branches of Masonry.
Knights Companions of the Order meet in Conclaves of the Red Cross of Constantine and a member must be a Royal Arch Mason in good standing and subscribe to a belief in the Christian religion as revealed in the New Testament. Membership is by invitation and each Conclave has a prescribed membership limit.
My speculation on the color purpure (purple): first the dye was very rare and costly, It was reserved for kings like Constantine. Second, purple is associated with the passion and sacrifice of the King of Kings, Jesus Christ. During the Lenten season, many churches drape their statuary with purple.
My Order, American Co-Masonry does not have that degree to my knowledge. Since I am not yet a Royal Arch Mason, I am not privy to that.
Recap: honor bestowed on Christian Masculine rite Masons, invitation only, must be a Royal Arch Mason first.
If you yourself with to pursue Freemasonry in an esoteric manner, American Co-Masonry may be your path. Feel free to write to me privately about more and to click upon the link below.
Heartiest good wishes,
A Master Mason
Hiram Lodge No 11 (Santa Cruz, CA)
Amon Ra Lodge No. 9 (Los Angeles, CA)
Sapientia Lodge of Research (Larkspur, CO)
Adamant Mark Lodge No. 3 (Santa Cruz, CA)