Complex sentence: After a time inspecting ship construction activities, Ellsberg was sent to England in time for the Normandy Invasion, where he was instrumental in setting up the Mullberry Harbour off the Normandy Beach also he prepared 89 damaged or superannuated ships for scuttling to make artificial harbors.
Split into simpler sentences: After a time inspecting ship construction activities, Ellsberg was sent to England in time for the Normandy Invasion, where he was instrumental in setting up the Mulberry harbour off the Normandy Beach. He also prepared 89 damaged or superannuated ships for scuttling to make artificial harbors.