Which organization was formed to help win back believers during the Counter-Reformation?

The Society of Jesus, commonly known as the Jesuits, was established during the Counter-Reformation to address the challenges posed by the Protestant Reformation and to win back believers to the Catholic Church. Founded by Ignatius of Loyola in 1534, the Jesuits focused on education, missionary work, and the spiritual formation of both clergy and laity. They played a significant role in revitalizing the Catholic Church by establishing schools and universities that promoted Catholic doctrine and engaged with the culture of the time. Their commitment to spreading the faith and countering Protestant beliefs made them a key force in the Counter-Reformation efforts, aiming to reclaim territory lost to Protestantism and reinforce Catholicism wherever possible.