Late in the war, in May–October 1917, the apparitions of Our Lady of Fatima occurred in Fatima, Portugal, apparitions that would be declared "worthy of belief" in 1930 during the papacy of his successor, Pius XI.
Pada akhir perang, pada bulan Mei – Oktober 1917, penampakan Bunda Maria Fatima terjadi di Fatima, Portugal, penampakan yang akan dinyatakan "layak dipercaya" pada tahun 1930 selama kepausan penggantinya, Pius XI.