The battle that frightened Churchill: the war in the Atlantic

On 3 September 1939, the passenger liner Athenia was sunk by U30. So began the Battle of the Atlantic, the longest and most complex campaign of the Second World War. The battle pitted the submariners of the Kriegsmarine against the Allied merchant fleet who were providing Britain's vital life line. This talk follows the changes in fortune of both the Kriegsmarine and the merchant fleet, and explains why Winston Churchill knew that the Battle of the Atlantic was the battle that Britain could not afford to lose.