Complex sentence: Sir George Binney (DSO) (1900--1972) was a noted arctic explorer and RNVR commander who, during World War II, led or was involved in operations, including Operation Rubble, to procure supplies of Swedish ball bearings for Britain.
Split into simpler sentences: Sir George Binney (DSO) (1900--1972) was a noted arctic explorer and Royal Naval Reserve commander. During World War II, he led or was involved in efforts, including Operation Rubble, to procure supplies of Swedish ball bearings for Britain.