Militia Christi
Militia Christi is a continuation of a centuries-old Catholic movement founded by Saint Dominic as a movement for laity, envisaged as a kind of army in suppressing insurgents inspired by the Albigensian heresy. Saints Catherine of Siena and Rose of Lima were both members of the original movement.
St. Dominic is more famous as the founder of the Order of Preachers, more commonly known as the Dominicans.