THE “Society of Jesus,” commonly called “the Jesuits,” is a secret order of the Roman Catholic Church, founded August 15, 1534, by the Spaniard, Ignatius Loyola, and sanctioned by Pope Paul III, September 27, 1540. Loyola had received a military training, and when he later became an extreme religious enthusiast, he conceived the idea of forming a spiritual militia, to be placed at the service of the pope. The Jesuit T. J. Campbell says: FAFA 273.1
“They are called the Society or Company of Jesus, the latter designation expressing more correctly the military idea of the founder, which was to establish, as it were, a new battalion in the spiritual army of the Catholic Church.” — The Encyclopedia Americana, art. “Jesuits.” FAFA 273.2