Complex sentence: The Luftwaffe targeted coastal towns such as Bridlington, Hornsea and Withernsea killing a total of 44 people, as well as RAF airfields such as RAF Driffield, RAF Catfoss and RAF Leconfield; an attack on RAF Driffield on 15 August 1940 killed 15 people.
Split into simpler sentences: The Luftwaffe targeted coastal towns such as Bridlington, Hornsea and Withernsea, killing a total of 44 people, as well as RAF airfields such as RAF Driffield, RAF Catfoss and RAF Leconfield. An attack on RAF Driffield on 15 August 1940 killed 15 people.