Why did airfields like manston came under so much fire from the Germans?

Answer 1

Manston and other airfields along the South-East coast of Britain came under heavy fire and bombing so often by the luftwaffe during the Battle-of-Britain because those bases were where the British were defending our shores from. Squadrons of Defiants, Blenheims, Hurricanes and Spitfires were being stationed at these small aerodromes waiting for the germans. The germans needed to destroy those landing strips and whatever else was there to stop the British aircraft from taking of to intercept them while they were on route to destroy their main targets in London and further afield.