military history - Periods
One method of dividing such a massive topic is by cutting it into periods of time. While useful this method tends to be inaccurate and differences in geography mean there is little uniformity. What might be described as ancient warfare is still practiced in a number of parts of the world. Other eras that are distinct in European history, such as the era of Medieval warfare, may have little relevance in East Asia.

• • military history - Periods - Prehistoric warfare
    • The beginning of prehistoric wars is a disputed issue between anthropologists and historians. In the earliest societies, such as hunter-gatherer societies, there were no social roles or divisions of labor (with the exception of age or sex differences), so every able person contributed to any raids or defense of territory.
  • military history - Periods - Ancient warfare
    • The first archaeological record, though disputed, of a prehistoric battle is about seven thousand years old, and it is located on the Nile in Egypt, in an area known as Cemetery 117. A large number of bodies, many with arrowheads embedded in their skeletons, indicates that they may have been the casualties of a battle.
  • military history - Periods - Medieval warfare
    • When stirrups came into use some time during the dark age militaries were forever changed. This invention coupled with technological, cultural, and social developments had forced a dramatic transformation in the character of warfare from antiquity, changing military tactics and the role of cavalry and artillery. Similar patterns of warfare existed in other parts of the world. In China around the fifth century armies moved from massed infantry to cavalry based forces, copying the steppe nomads. The Middle East and North Africa used similar, if often more advanced, technologies than Europe. In Japan the Medieval warfare period is considered by many to have stretched into the nineteenth century. In Africa along the Sahel and Sudan states like the Kingdom of Sennar and Fulani Empire employed Medieval tactics and weapons well after they had been supplanted in Europe.
  • military history - Periods - Gunpowder warfare
    • After Gunpowder weapons were first developed in Song Dynasty China (see also Technology of Song Dynasty), the technology later spread west to the Ottoman Empire, from where it spread to the Safavid Empire of Persia and the Mughal Empire of India. The arquebus was later adopted by European armies during the Italian Wars of the early 16th century. This all brought an end to the dominance of armored cavalry on the battlefield. The simultaneous decline of the feudal system — and the absorption of the medieval city-states into larger states — allowed the creation of professional standing armies to replace the feudal levies and mercenaries that had been the standard military component of the Middle Ages. The period spanning between the 1648 Peace of Westphalia and the 1789 French Revolution is also known as Kabinettskriege (Princes' warfare) as wars were mainly carried out by imperial or monarchics states, decided by cabinets and limited in scope and in their aims. They also involved quickly shifting alliances, and mainly used mercenaries.
  • military history - Periods - Industrial warfare
    • As weapons—particularly small arms—became easier to use, countries began to abandon a complete reliance on professional soldiers in favor of conscription. Technological advances became increasingly important; while the armies of the previous period had usually had similar weapons, the industrial age saw encounters such as the Battle of Sadowa, in which possession of a more advanced technology played a decisive role in the outcome.
  • military history - Periods - Modern warfare
    • In modern times, war has evolved from an activity steeped in tradition to a scientific enterprise where success is valued above methods. The notion of total war is the extreme of this trend. Militaries have developed technological advances rivalling the scientific accomplishments of any other field of study.