Tanks - Wonder Weapon of WW1?

Eighty years ago, a secret new weapon was born - the tank. From its inauspicious debut on the Somme in 1916 to the massed-tank battles of Cambrai and Amiens, the British media and public were fascinated with the tank. But how did this potent propaganda weapon actually perform on the battlefield? First-hand accounts from Tank Corps veterans and rarely seen archive film trace the highs and lows of this technological novelty, piecing together the true story of the tank in the First World War.