Women readily took up important jobs vacated by the men who had been called to arms. In addition to maintaining vital communications, women were found in strength in key civil defence operations, auxiliary fire-fighting and medical service. They were also to provide organised help where none had previously existed.

Tanks, planes, munitions and other crucial war production continues. Land Army girls go to work on the farms producing much needed food to feed the country. Gas attacks are expected and mothers must ensure the children practice wearing gas masks. During the Battle of Britain RAF Spitfires and Hurricanes take to the skies to engage raiders in the struggle for command of the air, the loss of which forces Hitler to abandon his plans to invade England. The battle is directed from an underground operations room where women of the Women's Auxiliary Air Force aided by the observer corps plot the position of aircraft on a large scale map.