The young Hilberg was a loner, pursuing solitary hobbies such as geography, music and train spotting. Though his parents attended synagogue on occasion, he personally found the irrationality of religion repellent and developed an allergy to it. He did however attend a Zionist school in Vienna, which inculcated the necessity of defending against, rather than surrendering to, the rising menace of Nazism. Following the March 1938 Anschluss, his family was evicted from their home at gunpoint and his father was arrested by the Nazis, but he was later released because of his service record as a combatant during World War I. One year later, on April 1, 1939, at age 13, Hilberg fled Austria with his family; after reaching France, they embarked on a ship bound for Cuba. Following a four-month stay in Cuba, his family arrived in Miami, Florida, on September 1, 1939, the day the Second World War broke out in Europe. During the ensuing war in Europe, 26 members of Hilberg's family were killed in the Holocaust.