 Diefenbaker's recollections do not correspond with his army medical records, which show no contemporary account of such an injury, and his biographer, Denis Smith, speculates that any injury was psychosomatic.After leaving the military in 1917, Diefenbaker returned to Saskatchewan where he resumed his work as an articling student in law.He received his law degree in 1919, the first student to secure three degrees from the University of Saskatchewan.