Season 1

The impressive fortifications and defensive strategies used during Spain's dramatic history of conflict, from the Middle Ages to the Civil War.

Discovering how France constructed ingenious fortifications, on a massive scale, to defend itself against attacks from the east.

The story of how the Netherlands, locked in a constant battle with water, has harnessed this threat to become a powerful European player.

Poland, one of the most invaded countries in Europe, now spends a large proportion of its budget on defence measures.

Archaeologist Tony Pollard explored Rochester Castle and an infamous medieval siege, while military historian Alex Churchill discovers how Britain tackled Napoleon.

Experts discuss how a small Finnish Force beat the Red Army in the Second World War, and how the Finns are now prepared for war as a super power with nuclear bunkers and urban warfare.