The League was officially formed by Emperor Leopold I, acting upon the advice of William III of Orange. The primary reason, for the League's creation, was to defend the Palatinate from France. This organization fought the War of the Grand Alliance, against France, from 1688 to 1697.
The See of Augsburg reached the period of its greatest splendor under St. Ulrich (923-973); he raised the standard of training and discipline among the clergy by the reformation of existing schools and the establishment of new ones, and by canonical visitations and synods; he provided for the poor, and rebuilt decayed churches and monasteries.
At the Diet of Augsburg in 1530, at which the so-called Augsburg Confession was delivered to Emperor V in the chapel of the episcopal palace, the emperor issued an edict according to which all innovations were to be abolished, and Catholics reinstated in their rights and property.
In the city of Augsburg the Catholic churches were seized by Lutheran and Zwinglian preachers; at the command of the council pictures were removed, and at the instigation of Bucer and others a disgraceful storm of popular iconoclasm followed, resulting in the destruction of many splendid monuments of art and antiquity.