Historian Ruth Goodman and archaeologists Alex Langlands and Peter Ginn face up to the challenges of the biggest revolution ever seen in the history of the British countryside as they turn Manor Farm back tohow it was run in the Second World War. When Britain entered the war, two-thirds of all Britain's food was imported - and now it was under threat from a Nazi blockade. To save Britain from starvation, the nation's farmers were tasked with doubling food production in what Churchill called 'the frontline of freedom'. This meant ploughing up 6.5 million acres of unused land - a combined area bigger than the whole of Wales.