In his youth, he was one of the leaders of the evangelical Bogomoltsy Movement [Wikidata] which won the support of Bishop Nikolaj Velimirović.

[4] He took over the administration of the Diocese of America and Canada on 15 April 1940, on the eve of the outbreak of World War II.

One of the most significant undertakings by Bishop Dionisije was his work in bringing and rescuing Serbs from the prison camps of Germany, Italy and Austria after the end of World War II.

According to records, 16,000 Serbs and about 30 priests were brought to the US and Canada on the basis of letters of guarantee signed by Dionisije.

[3] By the early 1960s, the SOC's stance toward the communist authorities had become a standing source of friction between Bishop Dionisije and Patriarch German in Belgrade.

Like most churches under communism, the SOC had found a modus vivendi in order to procure the space it needed to operate.

[2] Dionisije met Radmila Milentijević [Wikidata], the daughter of a former royalist officer who left Yugoslavia in 1953.

There was speculation both that Milentijević was his lover, and that she had been an agent of the Yugoslav authorities designed to seduce and discredit Bishop Dionisije.

After having returned to Belgrade, the group generally spoke positively of Dionisije, but also brought forward the allegations brewing around his personal life.

[5] In mid-October 1963, Bishop Dionisije was at the forefront of the local Serbs' campaign against Josip Broz Tito's visit to the United States.

They organized press conferences, picket lines, demonstrations and harangued San Francisco's Fairmont Hotel where he was staying.

It is alleged either that this signifies his renewed support for Dionisije before death, or that his corpse was taken from the Denver hospital where he died without permission.