The object of the Legion of Mary is the glory of God through the holiness of its members developed by prayer and active co-operation in Mary’s and the Church’s work. The unit of the Legion of Mary is called a praesidium, which holds a weekly meeting, where prayer is intermingled with reports and discussion. Persons who wish to join the Legion must apply for membership in a Praesidium. 

 

The Legion of Mary is a lay apostolic association of Catholics who, with the sanction of the Church and under the powerful leadership of Mary Immaculate, Mediatrix of All Graces, serve the Church and their neighbour on a voluntary basis. Every legionary is required to carry out a weekly apostolic work in the spirit of faith and in union with Mary. 

 

 The Legion aims to bring Mary to the world as the infallible means of winning the world to Jesus and legionary service is based on the doctrine of the Mystical Body of Christ so that in their fellow members and in those they serve, legionaries seek to have the Person of our Lord once again seen and served by Mary, his Mother.