Complex sentence: On 20 November 1914 Brooke-Popham was appointed Officer Commanding of No.3 Wing of the RFC 1914 which consisted of No.1 and No.4 squadrons and on the same day he received a temporary promotion to lieutenant colonel.
Split into simpler sentences: On 20 November 1914 Brooke-Popham was appointed Officer Commanding of No.3 Wing of the RFC. At this time the wing consisted of No.1 and No.4 squadrons and on the same day as his appointment, Brooke-Popham received a temporary promotion to lieutenant colonel.