Avraham fought in WW I with the Austro-Hungarian army with the rank of junior officer. After his discharge from the army he joined the Zionist movement. He started to study medicine but was forced to stop due to the anti-Semitic decrees. He joined the Zionist student union “Maccabea” and later the “Mizrahi” movement. He held high positions in those movements.
From 1943 Avraham gave assistance to Jewish refugees arriving in Budapest. After the Germans invaded Hungary on 19.3.1944, he was arrested by the Gestapo with his wife and his eldest son. His son was released with Kasztner’s help whereas Avraham and his wife were set free by Pinhas Rosenbaum and his comrades, members of “Bnei Akiva” wearing the fascist Arrow Cross uniform. Avraham was transferred to the “Glass House” on 29, Vadász Street and served there as a member of the management.
After the liberation he recruited people for aliya. In 1946 Avraham took part in the 22nd Zionist Congress in Basel. In 1948 he made aliya but was asked to return to Hungary in order to lead the movement. He was arrested by the communists, freed and after a year and a half he returned to Israel.