Complex sentence: The rest of the brigade occupied Cassel on 30 September and scouted the country in motor cars and an RNAS Armoured Car Section was created, by fitting vehicles with bullet-proof steel.
Split into simpler sentences: The rest of the brigade occupied Cassel on 30 September and scouted the country in motor cars. An RNAS Armoured Car Section was created, by fitting vehicles with bullet-proof steel.