He would frequently visit these children, providing a link with their parents who were also hiding, when not deported as was often the case. In addition to building and running his "underground railroad", Dom Bruno ensured that his charges were provided with false identification, including non-Jewish sounding names, and fake ration cards, as well as financial assistance to the rescuers. These logistical concerns could only be met with the willing but risky cooperation of numerous city officials, civil servants, and generous donors. The Gestapo got wind of Father Bruno's activities and raided Mont César Abbey in 1944. Fortunately, Dom Bruno was away at the time. Following the unsuccessful raid, the monk went into hiding himself, trading his habit for civilian garb and sporting a beret to hide his tonsure.