The Grand Imperial Council of Scotland- Red Cross of Constantine
The Red Cross of Constantine, or more formally the Masonic and Military Order of the Red Cross of Constantine and the Appendant Orders of the Holy Sepulchre and of St John the Evangelist, is a Christian fraternal order of Freemasonry. Candidates for the order must already be members of Craft Freemasonry (lodge) and Royal Arch Freemasonry (chapter); they must also be members of the Christian religion, and proclaim their belief in the Christian doctrine of the Holy Trinity.
The Masonic and Military Order of the Red Cross of Constantine is a three-degree Order of masonry, and with its “Appendant Orders” a total of five degrees are conferred within this system. Installation as a “Knight of the Red Cross of Constantine” is admission to the Order’s first degree. There are two more degrees which follow, and also the two other distinct Orders of Masonry (both Christian in character) which are under the control of each national (or regional) Grand Imperial Conclave of the Order.
Source: https://en.m.wikipedia.org/wiki/Red_Cross_of_Constantine