The history of the elephant as the ancient tank, right up to the addition by the Indian emperors of a fully rotational cannon. The ancient battering ram - the king of siege machines - how did it work, and could the ancients have really discovered the secrets of chemical fire-proofing? The amazing flexibility of the medieval fully armoured cavalry knight. An investigation into English civil war bullet-proof armour. Anti elephant rockets - how the rocket ended the elephants 2000 year domination of the battlefield.

• Sean Barrett