Complex sentence: After his military service he moved to Canada and studied at Dominion Herbal College in Vancouver where he obtained his degree in Naturopathy, then went on to study at the now defunct Iowa's Institute of Drugless Therapy and the now defunct Los Angeles Herbal Institute.
Split into simpler sentences: After his military service he moved to Canada and studied at Dominion Herbal College in Vancouver where he obtained his degree in Naturopathy. He later studied at the now defunct Iowa's Institute of Drugless Therapy and the now defunct Los Angeles Herbal Institute.