He continued his studies at the University of Lviv, and also in Great Britain,[1] France and Austria.
During World War II, Lopatynsky was a senior commander of the collaborationist Nachtigall Battalion.
After his release in 1944, Lopatynsky returned to Ukraine as a courier for the Ukrainian Supreme Liberation Council (UHVR) and the OUN-B.
[1] After the end of World War II, Lopatynsky emigrated to the United States.
In exile, he continued working for the UHVR, and for the émigré publishing houses Prolog[1] and Litopis UPA.