Complex sentence: The battalion amalgamated with the 8th Battalion to form the 5th/8th Battalion, The Cameronians (Scottish Rifles) in 1921 and then converted to a searchlight regiment in 1938.
Split into simpler sentences: The battalion amalgamated with the 8th Battalion to form the 5th/8th Battalion, The Cameronians (Scottish Rifles) in 1921. It converted to a searchlight regiment in 1938.