Complex sentence: In August 1936, the Air Ministry placed an order for 100 Hampdens equipped with the Dagger engine, these aircraft subsequently received the designation "HP.53" along with the name "Hereford".
Split into simpler sentences: In August 1936, the Air Ministry placed an order for 100 Hampdens equipped with the Dagger engine. Those aircraft subsequently received the designation "HP.53", along with the name "Hereford".