Knights of the Immaculata - Defending the Faith Against Freemasons

The Militia Immaculata, or "Army of the Immaculate," (also called the Knights of the Immaculata in the USA^[1][2]) is a worldwide Catholic evangelization movement founded by St. Maximilian Kolbe in 1917.^[3]

The organization was formed in response to protests against the Pope by Freemasons in Rome^[4][5]. The MI, as it is also known, is open to all Catholics and encourages intercession to the Virgin Mary for the conversion of sinners. Joining the MI involves making a vow of consecration to Mary. Members wear the Miraculous Medal as an outward sign of their consecration.

“	The purpose of the Knights is contained in these words: to do all you can for the conversion of sinners, heretics, schismatics and so on, above all the Masons, and for the sanctification of all persons under the sponsorship of the Blessed Virgin Mary, the Immaculate Mediatrix.	”
—Fr. Maximilian Kolbe, 1938[2]

The organization publishes Miles Immaculatae, a six-monthly magazine of Marian culture and Kolbian formation. Founded by St. Maximilian Kolbe, specifically for priests and pastoral workers, it is now the official publication of the International Center.^[6]

http://en.wikipedia.org/wiki/Militia_Immaculata