Obscure origins: Like so many things pertaining to the dark realms of antiquity it can’t be said definitively when the crossbow came into existence…at some point between the 7th to 5th centuries BC, the consensus of opinion says. What is pretty much settled is that it first appeared as a combat weapon in China. The Chinese employed it to good effect during the Warring States period (c.475 – 221 BC). Crossbowmen of this period comprised between 30 to 50 per cent of standing Chinese armies. The weapon was still popular during the Han Dynasty (late 3rd century BC to AD 220) but it’s popularity diminished after the Hans lost power, possibly due to the introduction of more resilient heavy cavalry under the succeeding Six Dynasties.

The crossbow in Europe, decline and reemergence: From ancient China the crossbow spread to Europe’s early civilisations. Its use was recorded in a battle at Syracuse (Sicily) as early as 397BC. The ancient Greeks were responsible for several early iterations of the crossbow namely the gastraphetes, a hand-held crossbow invented before 400BC, and the ballista, a small assault weapon capable of firing both stones and bolts, which the Romans copied and modified as a composite catapult-crossbow called a scorpio. The scorpio was lethally effective, offering marksman-like precision of its projectiles. The cheiroballistra or maniballista was another Roman variant on the crossbow with specific application as a siege engine. After the fall of Rome the crossbow fell out of use in the West until the 10th to 11th centuries AD when it was revived. The French used crossbows in siege warfare and they were in use during the epochal Battle of Hastings in England in 1066. And the famous Plantagenet warrior-king of England, Richard the Lionheart, was killed by a bolt from a crossbow. The crossbow attached considerable prestige especially in England, so much so that only knights were permitted to own and use the weapon in war.

Crossbow or siege engine? As iron-based crossbows were improved and made more powerful and elaborate, the concept of the crossbow starts to merge with that of the torsion-powered siege engine (the former requiring only one man to work it while the latter needed several men). Certainly medieval sources seem to have conflated the two…different authors writing on the Crusader wars for instance have described the ballista alternately as a crossbow or a siege engine [Stuart Ellis-Gorman, The Medieval Crossbow: A Weapon Fit to Kill a King (2022)].

Evolution of medieval crossbows: In the Middle Ages the arbalest was popular in Europe. This was a decided technical advance in crossbows, improved by having a special mechanism for drawing back and releasing the string. Arbalests were larger and heavier weapons with metal-tipped bolts replacing the earlier wood-bolted crossbows, thus achieving devastating impact against the armour of the enemy. By the 13th century further technological improvements in the use of crossbows came with the advent of winches and various spanning mechanisms such as winch pulleys, cord pulleys, gaffles, cranequins, and screws [‘Medieval Crossbow’, Medieval Britain, http://medievalbritain.com]. The crossbow increasingly evolved into a defensive weapon, a composite crossbow–catapult of sorts, used to defend castles during sieges and favoured for its longer range capacity.

Crossbow versus longbow? Which weapon was more effective in medieval warfare situations? There is not a straightforward answer to this question because the two lethal projectiles had different strengths and advantages over each other. The (English) longbow had a flexibility and portability edge over the more clunky crossbow which need time (and sometimes assistance) to load. The crossbow however was more accurate including at distances in honing in on the intended target (with a range of up to 300m). The longbow having simpler parts was cheaper to manufacture and where it had clear advantage over the crossbow was in its frequency of shots. In the time it took the crossbowman to launch two or at most three bolts at the enemy, the longbowman could propel 10 to 12 arrows. The crossbow though perceptibly slower to load and much heavier to carry, required appreciably less strength to operate…it’s locking mechanism allowed the crossbowman to handle stronger draw weight so able to hold the bolt for longer with significantly less physical strain, which translated into better precision (‘Medieval Crossbow’). Another plus for the crossbow was ease of use, it required minimal training cf. the traditional bow which took years of training to master. The downside for the longbow in battle was that it couldn’t penetrate medieval armour as the heavier bolts could do. This didn’t seem to be a problem in the two most famous battles of the 100 Years War—Crecy and Agincourt—where the English bowmen triumphed completely over the numerically superior French and mercenary crossbowmen (and cavalry) [‘A quick history of the English longbow’, Notes from the U.K., 17-Jan-2025, www.notesfromtheuk.com].

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The crossbow reaches its obsolescence point: By the 16th century the crossbow had seen its best days and was being supplanted by gunpowder weaponry – muskets, cannons, guns. Firearms had greater range, faster reload times and an overall firepower that crossbows could not begin to match. The final fling for the crossbow as a weapon of choice in war occurred in 1644 at the Battle of Tippermuir in Scotland (English Civil War).

Endnote: Crossbow sellers’ greatest marketeer: Hovering at the intersection of history, myth and popular culture is the heroic legendary figure most popularly associated with deadeye expertise in the crossbow caper and a talent for shooting apples off his own son’s head, William Tell. Elevated by Swiss folklore as a symbol of the struggle for liberation from the tyrannical Austrians, baby boomers—opera buffs aside—will associate the mythical hero William Tell with the 1958–59 British television series The Adventures of William Tell in which Tell (played by Conrad Phillips) is portrayed as a sort of Robin Hood clone but with a different kind of bow and the Swiss Alps rather than Sherwood Forest for backdrop𖤓.

𖤓 a nexus not coincidental, ‘William Tell’ was created to exploit the success of another highly popular ITV show of the Fifties The Adventures of Robin Hood. ‘Tell’ followed the earlier series’ familiar formula: a brave citizen turned outsider valiantly leading the resistance on behalf of the oppressed masses against a unredeemable evil tyrant