Complex sentence: After World War II the club added "Town" to their name and joined Division Two of the North Essex League, and were swiftly promoted to Division One, before going on to re-join the Essex & Suffolk Border League.
Split into simpler sentences: After World War II the club added "Town" to their name and joined Division Two of the North Essex League. They were swiftly promoted to Division One, before joining the Essex & Suffolk Border League.