[1] When World War II began, Rabbi Halpern attempted to flee the Nazis but he was arrested by the Russians while crossing the border.

[1] After World War II ended, Halpern moved to Bergen-Belsen, where was appointed as rabbi.

[7] On several occasions the Vaad formed a bais din in Hannover and in other smaller communities in the zone.

[3][5][1][2] Later he moved to Boro Park where he was a rabbi and the leader "Merkaz Chinuch Hatorah" (Center for Torah Education).

[1] Halpern's wife Dina and their three children were not able to escape when the Nazis invaded Poland and were murdered in the Holocaust.