Dimitrije Najdanović, like Veselin Čajkanović and some others, taught at the University of Belgrade throughout German occupation of Yugoslavia, teaching at the Faculty of Theology and, before the Soviet troops entered Belgrade and before the provisional government of the so-called Democratic Federal Yugoslavia put Tito in power (for life), Najdanović and his wife Jelena left Yugoslavia for Austria in 1944. There, at the Lienz camp along with Russian refugees from Yugoslavia, they bore witness to that terrible occasion when the Occupation Forces betrayed the Cossack refugees to the Soviets, to be carried away and shot. That grim episode of forced Repatriation of Cossacks after World War II in 1945 became common knowledge only when Nikolai Tolstoy wrote "Minister and Massacres", blaming Harold Macmillan for advising General Charles Keightley of V Corps, the senior Allied commander in Austria responsible for Operation Keelhaul, which included the forced repatriation of up to 70,000 prisoners of war to the Soviet Union and Josip Broz Tito's Yugoslavia in 1945. At the end of the hostilities, from the displaced person camp in Austria Najdanović and Jelena left Linz for Rome, where he published Serbian Orthodox liturgical textbooks at the expense of the Vatican's generous printer.