Compelled by his hostility toward the German occupation and Nazism, Dom Bruno made contact with elements of the Belgian Resistance and assisted in the escape of British pilots shot down over Belgian territory. In 1942, the Nazi authorities began rounding up Jews in Belgium for deportation to the death camps. On orders of his superior, Dom Bruno proceeded to the hamlet of Hodbomont to act as chaplain at a home for the blind. The priest soon became aware that the home was being used as a hiding place for a number of Jewish adults and children, brought there by a group of Christians opposed to the Nazi policies. The leader of the group was a prominent lawyer, Albert van den Berg, with whom Dom Bruno became a close collaborator. When it became unsafe to continue hiding Jews at this location, the home was closed and its occupants dispersed to other locations. Dom Bruno returned to Mont-César and dedicated himself exclusively to finding places of refuge for Jews.