The Union spread rapidly after Pope Benedict XV , in his 1919 encyclical Maximum Illud , recommended its presence in every diocese .
In 1916 , Father Manna , established the Missionary Union of Priests and Religious to promote awareness of the Missions .
The Union spread rapidly after Pope Benedict XV , in Father Manna 's 1919 encyclical Maximum Illud , recommended its presence in every diocese .
In 1916 , Father Manna , established the Missionary Union of Priests and Religious to promote awareness of the Missions .