The Forty Days of Musa Dagh is a 1933 novel by Austrian-Jewish author Franz Werfel based on the defense of a small community of Armenians living in the Musa Dagh of the Ottoman Empire in 1915 during the height of the Armenian Genocide. The book was originally published as Die Vierzig Tage des Musa Dagh in German in November 1933. It achieved great international success and has been credited with awakening the world to the evidence of the persecution and partial destruction of the Armenian nation during World War I. The novel is a fictional account based on the defense of Musa Dagh's Armenians who were facing deportations and massacres ordered by the Young Turkish government.