Complex sentence: He served in the United States Navy during World War II from 1942 to 1944, then attended Boston College and Boston College Law School under the G. I. Bill receiving a law degree (LL.B.) in 1949.
Split into simpler sentences: He served in the United States Navy during World War II from 1942 to 1944. He studied at Boston College and Boston College Law School under the G. I. Bill, receiving a law degree (LL.B.) in 1949.