Complex sentence: On 21 September 1915, Louis Strange was appointed to form and command No.23 Squadron RFC at Gosport Hampshire and was promoted to Major on 5 November, the day he married his wife, Marjorie.
Split into simpler sentences: On 21 September 1915, Louis Strange was appointed to form and command No.23 Squadron RFC at Gosport Hampshire. He was promoted to Major on 5 November, the day he married his wife, Marjorie.