Complex sentence: A Service Squadron (ServRon) was a U.S. Navy squadron that supported fleet combat units, from 1943 to as late as the early 1980s.
Split into simpler sentences: A Service Squadron (ServRon) was a U.S. Navy squadron that supported fleet combat units. Service Squadrons were used by the US Navy from their inception in 1943 to as late as the early 1980s.