Espionage is vital to keep the warring countries informed of their opponents’ plans.

The sea continues to be a dangerous place

British broadcasting is further restricted to keep the nation’s morale high

Norway and Sweden could be dragged into the war if an Allied plan goes ahead

Finland suffers many casualties in heavy Soviet bombing

German bombers pummel shipping in the North Sea but RAF Hurricanes strike back

As the war rumbles on, more and more countries begin to worry about the consequences if hostilities spread

Japan’s economy is moving more and more on to a war footing

The British seek to buy Italian fighter aircraft