Complex sentence: In 1949 Velina's father returned to the United States; in order to be reunited with Setsuko, he volunteered for active duty in the Korean War and returned to Asia in 1951.
Split into simpler sentences: In 1949 Velina's father returned to the United States. In order to be reunited with Setsuko, he volunteered for active duty in the Korean War and returned to Asia in 1951.