Complex sentence: In 1945, when he was five years old, the family moved to Austin, Texas, and his father, who was serving in the U.S. Navy, shipped out to the South Pacific for nine months.
Split into simpler sentences: In 1945, when he was five years old, his family moved to Austin, Texas. His father who was serving in the U.S. Navy was then shipped out to the South Pacific for nine months.