Medieval warfare in the context of "Medieval fortification"

Feudalism, also known as the feudal system, was a combination of legal, economic, military, cultural, and political customs that flourished in medieval Europe from the 9th to 15th centuries. Broadly defined, it was a way of structuring society around relationships derived from the holding of land in exchange for service or labour.

The classic definition, by François Louis Ganshof (1944), describes a set of reciprocal legal and military obligations of the warrior nobility and revolved around the key concepts of lords, vassals, and fiefs. A broader definition, as described by Marc Bloch (1939), includes not only the obligations of the warrior nobility but the obligations of all three estates of the realm: the nobility, the clergy, and the peasantry, all of whom were bound by a system of manorialism; this is sometimes referred to as a "feudal society".

Early modern warfare is the era of warfare during early modern period following medieval warfare. It is associated with the start of the widespread use of gunpowder and the development of suitable weapons to use the explosive, including artillery and firearms; for this reason the era is also referred to as the age of gunpowder warfare (a concept introduced by Michael Roberts in the 1950s).

Fortification techniques evolved rapidly due to the development of artillery. Firearms revolutionized warfare, diminishing the role of aristocracies and heavy cavalry. Early firearms, like arquebuses and muskets, gradually replaced bows and crossbows, leading to the introduction and decline of plate armor as firearms became more effective. Flintlock muskets became dominant by the 1690s, and the invention of the bayonet combined pikes and muskets, transforming infantry into the most crucial military force. Warfare also saw a shift towards larger armies and more devastating conflicts. The rise of centralized states and bureaucracies supported the new, massive armies, while the use of mercenaries declined. Military formations adapted to these changes. Infantry relied on columns, lines, and squares for battle, while cavalry transitioned to lighter roles focused on scouting and flanking. Despite the decline in heavy cavalry's dominance, cavalry charges remained effective under specific conditions, particularly against undisciplined infantry. The Age of Sail (usually dated as 1571–1862) was a period roughly corresponding to the early modern period and gunpowder dominated the era's naval tactics, including the use of gunpowder in naval artillery.

Historical reenactment (or reenactment) is an educational or recreational activity in which history enthusiasts and amateur hobbyists dress in period-accurate clothing and recreate aspects of past events or eras. This may be as narrow as a specific moment from a battle, such as a reenactment of Pickett's Charge presented during the 1913 Gettysburg reunion, or as broad as an entire period, such as Regency reenactment.

While historical reenactors are generally amateurs, some participants are military personnel or historians. The participants, called reenactors, often research the equipment, uniform, and other gear they will carry or use. Reenactors buy the apparel or items they need from specialty stores or make items themselves. Historical reenactments cover a wide span of history, from as far back as ancient warfare, the medieval warfare era, and the early modern warfare, to as recent as the World Wars, the Cold War era, and even the early 21st-century modern warfare in modern reenactment.

In medieval warfare a mantlet or mantelet was a portable wall or shelter used for stopping projectiles. Some versions used wheels for enhanced mobility. A mantlet could protect one or several soldiers.

In the First World War (1914-1918) French soldiers used a mantlet-style device to attack barbed wire entanglements.

Escalade is the act of scaling defensive walls or ramparts with the aid of ladders. Escalade was a prominent feature of sieges in ancient and medieval warfare. Although no longer common in modern warfare, escalade technologies are still developed and used in certain tactical applications.