Legion of Mary

The Legion of Mary (Latin: Legio Mariae) is an association of Catholic laity who serve the Church on a voluntary basis. It was founded in Dublin, Ireland, as a Roman Catholic Marian Movement by layman Frank Duff, and has today over three million active members worldwide. The number of the auxiliary members is estimated to about ten million.To be in the Legion of Mary, one must be a practising Catholic. Active members serve God under the banner of Mary by practising the Spiritual Works of Mercy.
The main apostolate of the Legion consists in activities directed towards all men and women, young and old, rich and poor as well as people from the margins of society (homeless, prostitutes, prisoners etc.) and towards non-Catholics. The members of the Legion are primarily engaged in the performance of the Spiritual Works of Mercy rather than works of material aidThe organization of the Legion is modeled on the Roman Army, starting with the praesidium as its smallest unit, and going up from there. The praesidium, usually a group of 4-20 members, meets weekly in its parish. The Curia is the next level up, and one Curia supervises several Praesidia.
The next level is the Comitium, which is in charge of several Curiae, usually over an area like a big city or a part of a province. The following level is the Regia, in charge of larger territories like a province or state (in the U.S.). The Senatusis the next highest level, and it generally has control over the Regiae in a very large area, usually a country or very large territory. The Concilium is the highest level. It has its seat in Dublin, Ireland, and has control over all of the Legion.Each level of the Legion of Mary has the same officers: The President, the Vice President, the Secretary, the Treasurer, and the Spiritual director. The latter must be a priest or a religious. All other offices are held by laymen or -women.Membership is open to all baptized Catholics. After visiting a praesidium a few times, one can join the legion as a probationary member.
This probationary membership lasts for three months and can be extended for another three months, after which he or she has to decide whether to join the Legion as an active member permanently. During the probationary period, probationary members learn about the legion system by reading the Handbook of the Legion of Mary and its active works by listening to reports of active works undertaken by fellow legionaries. At the end of probationary period, members say an oath of "Legion promise", a pledge of allegiance to the Holy Spirit and to Mary, in order to become a permanent active member. Membership in the Legion of Mary is essentially based on discipline and commitment. Members devote their time and prayer for the intentions of Mary, Mother of God. Members can withdraw from the Legion by informing the president of his or her praesidium.