In war anthropology, strong correlations between social structure and types of wars, and between types of wars and weaponry have been proposed. Wars in tribal societies are fought far apart, thus only projectile weapons are used. However, wars amongst chiefdoms and states are fought both as melee combat and ranged combat. This can at least partially explain the combined usage of projectile weapons and shock weapons.
Weaponry and their changes in ancient Korean culture were examined in this article.
In the Neolithic, only arrowheads, a projectile weapon, were found. In the Early Bronze Age, the emergence of the stone dagger gave rise to a weapon combination consisting of projectile weapons (arrowheads) for ranged combat and hilt weapons (stone daggers) for melee combat. The appearance of lute-shaped bronze spearheads at around 6th century B.C, in turn gave rise to a new weapon combination consisting of projectile weapons (stone or bronze arrowheads), hilt weapons (stone or bronze daggers) and pole weapons (luteshaped bronze spears). The discovery of Chinese bronze daggers, bronze dagger-axes, bronze spears, and lute-shaped bronze spearheads dating to ca. 5-4th century B.C. at Shiertaiyingzi (十二臺營子) illustrates the continued trend of increased sophistication in weapon combination.
This weapon combination spread with the Slender Bronze Dagger Culture to the Liaodong and Korean peninsulas, and then to the Japanese Archipelago at ca. early 2nd century B.C. The combined use of projectile and shock weapons signifies the emergence of a new type of war that includes both ranged combat and melee combat. In studies of war anthropology, this type of war is only deemed possible in a society where the leader had a sufficient level of coercive power. The emergence and spread of such a weapon combination can be seen as a material manifestation of the establishment of such coercive power which indicates the advent and formation of early states.