European crossbow

Timeline

1. 1171–1173Angevin Empire (England and France) · Angevin EmpireUnder Henry II, royal armies and feudal levies commonly included crossbowmen (balistarii); the contemporary jurist Glanvill cited providing crossbowmen as an example of a vassal's military obligation, showing the crossbow had shifted from a marginal weapon to an institutionally levied standing arm in Western European noble warfare.
2. 1174–1176Crusader states of the Levant · LevantFrankish garrisons and expeditionary forces deployed large numbers of crossbowmen in castle warfare, often combining them with large shields (pavises) to form protected firing positions; contact with the eastern Mediterranean also prompted Western European armies to attend to stronger bow limbs and trigger structures, accumulating technical and tactical experience for the later spread of composite crossbow limbs.
3. 1177–1180Kingdom of Jerusalem · Kingdom of JerusalemIn battles such as Montgisard in 1177, crossbowmen fought alongside heavy cavalry, showing the crossbow was no longer confined to sieges; its ability to penetrate mail and low training threshold made it key infantry firepower for countering knightly charges, and expanded the mercenary crossbowman market of Italian city-states and Gascony.