Episode 1 traces the evolution of soldiers and their gear.

Episode 2 explores mobility on the battlefield, and the never-ending challenge to maximize effectiveness and find the right balance of protective armor, speed, mobility and firepower.

Episode 3 tracks the development of artillery from the ancient Greeks, through the invention of gunpowder in China, to the very latest generation of big guns and directed-energy weapons.

Episode 4 considers the ways in which armies have used or modified the terrain of the battlefield to their advantage for both defense and attack.