Finally, each vassal a clan acquires gives their lord +1 honor, for a total of up to +3. Making vassals can be a useful endeavor: the player gains a new unit or two (usually yari ashigaru, vassals are guaranteed trade partners unless a trade route cannot be established in the first place, and vassals give a portion of their income to their patron clan. This can either be done as part of a regular agreement, or chosen by a weakened faction that would submit rather than face destruction. Factions may offer other factions to become their vassal. In Total War: Shogun 2, vassals make their formal debut.
In Napoleon: Total War, the protectorate system functions similarly to its Empire: Total War incarnation, with a few minor differences. In Empire: Total War, a similar system to vassalage exists in the form of the Protectorate system.
