Together with Monsignor Ferdinando Baldelli, he was asked in 1943 by Pope Pius XII to develop a Papal charity Pontificia Commissione di Assistenza from scratch.
This was developed quickly in cooperation with the charity efforts of Sister Pascalina Lehnert and Monsignore Giovanni Battista Montini.
In 1944 the Pope asked him to form a new Papal refugee office to assist the tens of thousands of displaced persons in Italy.
[4] In this capacity he was involved in the organisation of charities, especially food items, clothing and shelter for Italians and displaced persons, the negotiation of the transfer of all portable religious art from Monte Cassino, prior to its destruction.
Much effort was devoted behind the scenes to a plan by the Pope, to create a Papal fleet in order to allow refugees to leave Europe for the Americas and to bring in badly needed food shipments from there; safe conduct could not be obtained by the war parties.
[5] After the war in 1946 he returned to the Black Forest and reopened Kolleg St. Blasien against the initial advice of his superiors, but with significant material assistance of Pope Pius XII via Madre Pascalina Lehnert.
In 1949, he formed an alliance of Catholic, Protestant and secular non-governmental schools to assure some freedom for private educational institutions especially in the State of Baden-Württemberg.
After a heart attack in 1956, he stepped down and continued his publications of Ambrose for the Commission for Editing the Corpus of the Latin Church Fathers (CSEL) in Vienna, Austria.
He published Ambrose works on the sacraments, explanation of symbols, the mysteries, confession, fath, Holy Spirit, and the death of emperors Theodosius and Valentinian.