Complex sentence: After nearly 20 years in the steel industry, he quit and joined the civil service as an executive officer in the Department of Employment, and during that time he displayed his all-round sporting versatility by turning out regularly for the Wrexham civil service cricket team.
Split into simpler sentences: After nearly 20 years in the steel industry, he left to join the civil service as an executive officer in the Department of Employment. While at the civil service, he displayed his all-round sporting versatility by turning out regularly for the Wrexham civil service cricket team.