Complex sentence: Joining the Australian Imperial Force as a major on 30 September 1914, in November Wilson transferred from the 7th Light Horse Regiment to the 5th (Queensland) Regiment of which he became second-in-command.
Split into simpler sentences: Joining the Australian Imperial Force as a major on 30 September 1914. In November Wilson transferred from the 7th Light Horse Regiment to the 5th (Queensland) Regiment, of which he became second-in-command.