Complex sentence: In 1924 Waghorn became a cadet at the Royal Air Force College Cranwell, when he passed out in August 1924 he was awarded the Sword of Honour as the best all-round cadet.
Split into simpler sentences: In 1924 Waghorn became a cadet at the Royal Air Force College Cranwell. When he passed out in August that year he was awarded the Sword of Honour as the best all-round cadet.