The pike was an infantry spear of four to six metres, fought in deep blocks, and it took the battlefield back from heavy cavalry.
The pike is an infantry spear made very long — four to six metres — and used in a deep block rather than by an individual. It is the weapon that ended three centuries of heavy cavalry dominance in Europe.
Almost all of it is shaft. The head is small, narrow and unremarkable, and everything that makes a pike effective is a consequence of its length and of the formation it is used in.
It is therefore the clearest case in the archive of a weapon that cannot be understood as an object. A single pike is nearly useless; ten thousand of them in disciplined blocks reshaped European warfare.
The shaft is ash, straight-grained and tapering slightly toward the butt, and it is the expensive part: a five-metre stave without a knot or a twist is a demanding piece of timber, and pike shafts were a traded commodity in their own right.
The head is a small leaf or lozenge of steel, twenty to thirty centimetres, socketed onto the shaft. It needs to be no larger, because a pike kills by being driven with the weight of several ranks behind it rather than by the size of its point.
Long iron langets — flat straps riveted down the sides of the shaft below the head, often seventy centimetres or more — stop an opponent simply cutting the head off with an axe or a halberd. A plain iron ferrule protects the butt, which is planted in the ground against a charge.
Pikemen fight in a deep block, commonly several thousand strong. The front four or five ranks level their pikes so that a horse or a man approaching the formation meets four or five points at once; the ranks behind hold theirs upright and push.
Against cavalry the effect is close to absolute. A horse will not run onto a hedge of points, and a charge that stops in front of a pike block is a stationary target for everything behind it.
The block is not purely defensive. Swiss practice in particular used pike squares offensively, advancing at speed to shatter an opposing formation, with halberdiers stepping into the gaps to do the close killing where the pikes had done the pushing.
Its strengths are reach, cost and the confidence it gives ordinary men. A militia that would break in the open will hold behind a hedge of pikes, and the weapon itself is a stave and a small piece of steel.
Its weaknesses are flanks, missiles and broken ground. A pike block that is outflanked cannot turn quickly, it cannot answer archery or artillery at all, and rough terrain destroys the cohesion that makes it work — which is why pike formations were eventually paired with handgunners.
The individual pikeman is also helpless once the block breaks. In a close melee a five-metre shaft is a liability, so pikemen carried a sword or a dagger for the moment their formation stopped existing.
The long infantry spear is not new, but its systematic use in deep blocks is. Flemish militia beat French heavy cavalry at Courtrai in 1302 with long spears and pikes, a result that shocked Europe precisely because it should not have been possible.
The Swiss developed it furthest through the fourteenth century, at Morgarten in 1315 and Sempach in 1386, and by the fifteenth their pike squares were the most feared infantry on the continent and the most sought-after mercenaries.
The pike then outlasts the Middle Ages entirely. Combined with firearms into pike-and-shot, it remains standard European infantry equipment until the socket bayonet let a musketeer be his own pikeman around 1700.
Swiss practice is the reference. Swiss blocks were deep, aggressive and drilled, and their reputation was such that other powers hired them rather than trying to copy them.
The German Landsknechts were raised in deliberate imitation from the 1480s and became the Swiss formations' principal rivals, using very similar weapons and a similar tactical system.
Flemish and Scottish traditions ran in parallel: Flemish militias used long spears and pikes from the early fourteenth century, and Scottish schiltrons at the Battle of Bannockburn in 1314 achieved a comparable result against English cavalry with a shorter spear and the same principle.