Dual-wielding is a form of combat, wherein one uses a pair of weapons in conjunction with one another. This is often to allow an easy shift between long and short-ranged attacks.
Most Assassins of the High Middle Ages would only dual-wield throwing knives alongside a short blade.
During the Renaissance, Ezio Auditore da Firenze and his Assassin recruits were able to dual-wield multiple combinations of weapons. Other than the throwing knives and short blade pair, Ezio could wield the Hidden Gun with any primary, medium-ranged weapon – such as swords and maces – and poison darts with the Poison Blade. His recruits wielded their Hidden Gun with almost any other weapon. During his time in Constantinople, Ezio could also dual-wield a variety of bombs with his primary weapon.
During the Golden Age of Piracy, Edward Kenway dual-wielded two swords, and multiple pistols.
During the American Revolutionary War, Ratonhnhaké:ton would always dual-wield his weapons in combat, using combinations such as a tomahawk or swords alongside his flintlock pistol(s). He often used his hidden blade with almost any other weapon, using the pivot attachment to use it as a dagger.
During the Louisiana Rebellion, Aveline de Grandpré dual-wielded her weapons in combat. The weapons she dual-wielded include, a whip, firearms, swords, knives, a blowpipe, a sugar-cane machete and Hidden Blades.
Only a few enemies, such as Papal Guards, Cesare Borgia, and the Janissaries, were able to dual-wield; using a short pistol alongside a longsword in combat. Officers and Jagers would also dual-wield weapons in a similar manner.
Ezio Auditore using a short blade and throwing knife
Edward Kenway using two swords
Ratonhnhaké:ton using a tomahawk and pistol