Complex sentence: He was elected from a single term as Deputy Shire President from December 1955 to December 1956 and later rose to become Shire President from December 1960 to December 1961.
Split into simpler sentences: He was elected from a single term as Deputy Shire President from December 1955 to December 1956. Ruddocklater rose to be Shire President from December 1960 to December 1961.