Complex sentence: At the end of August Air Vice-Marshal Trafford Leigh-Mallory the commander of No.12 Group ordered the Hurricanes of 242 Squadron commanded by Douglas Bader to come down from Coltishall to join 19 and 310 Squadrons which were on daily standby at Duxford.
Split into simpler sentences: At the end of August Air Vice-Marshal Trafford Leigh-Mallory the commander of No.12 Group ordered the Hurricanes of 242 Squadron commanded by Douglas Bader. They came down from Coltishall to join 19 and 310 Squadrons which were on daily standby at Duxford.