Complex sentence: Madison and then Harvard University, graduating with honors in 1942, and then served during World War II. A communications officer on an attack transport, USS "Mellette", he saw action at Iwo Jima and Okinawa.
Split into simpler sentences: Madison and then Harvard University, graduating with honors in 1942. He served during World War II and, as communications officer on an attack transport, USS "Mellette", saw action at Iwo Jima and Okinawa.