Complex sentence: During the Second World War a temporary camp (Harland Way Camp) was constructed near Cottingham Grange, initially it housed refugees, and later became an army transit camp; the grange itself was used as officers quarters.
Split into simpler sentences: During the Second World War, a temporary camp (Harland Way Camp) was constructed near Cottingham Grange. Initially, it housed refugees, and it later became an army transit camp; the grange itself was used as officers quarters.