Why Armour Keeps Changing

The story

Visit a great museum and ask to see the armour, and you will not be shown one suit. You will be shown many kinds. Shirts made of thousands of tiny linked metal rings. Gleaming suits of smooth curved steel. Padded jackets, hardened leather, helmets in many shapes from many lands. Why so many kinds? Because armour is one half of a very long conversation.

Working armour answers a danger. Change the danger, and the armour must change too. Long ago, smiths linked little rings into whole shirts of mail, wonderful protection against a slashing edge. Later in Europe, as crossbows and other piercing weapons grew stronger, armourers added more and more smooth, curved plates over the mail, shaped so that a blow would glance away instead of biting in.

But no armour comes free, and this is the heart of the whole story. Every layer that protects you also weighs on you. A knight in a full suit of plates could still walk, climb onto a horse and move surprisingly well, for the weight was cleverly spread across the whole body. Yet every extra piece cost a little speed and a little breath. Armour is always a bargain. Protection, weight, and freedom to move. You may choose your balance, but you cannot have everything. That is why a scout often chose light gear and speed, while a wealthy knight might wear a whole suit.

Then gunpowder arrived, and the conversation slowly changed. As guns grew stronger over the centuries, stopping their blows took thicker and heavier plate, until the old bargain stopped being worth it. Piece by piece, most armour was set aside. For a long stretch of history, soldiers marched with hardly any at all.

But the conversation was not over. About a hundred years ago, steel helmets returned to protect soldiers' heads. Then modern scientists learned to weave a fabric so clever, one called Kevlar, that it can catch a sudden blow and spread its push sideways through the weave, and lighter, stronger vests followed. The old bargain came back in new clothes, protection against today's dangers, light enough for today's soldier.

And people were never the first armourers. The turtle carries a shell built into its very skeleton. The pangolin wears overlapping scales made of the same material as your fingernails. The armadillo wears movable bands of armour joined by bendy skin, so it can still run, and a few kinds can even curl into a ball. Each animal's armour answers its own dangers, and pays its own price in weight and speed. Same conversation, older speakers.

So there is no such thing as the best armour. There is only the best answer to a particular danger, worn by a particular body, that still needs to move. The next time you see a suit of armour in a museum, read it like a letter from the past. Every ring and plate is one line of a long conversation, where a danger spoke and an armourer answered.