Units in Rise of Nations are divided firstly in three basic categories: Civilians, which maintain the economy, Military Units, which defend the nation, and Support Units, which serve as tactical and strategic aides to military efforts. Military units in particular, with their great variety, are themselves divided in several groups, regarded by this wiki as classes. Each class is further divided by the different qualities of the units in them, what this wiki regards as unit types. For instance, Heavy Cavalry is a type of the Cavalry class. In addition, some unit classes are also a unit type at the same time, like the Artillery class, which has only one upgrade line of units, so it manages to be both a unit class and unit type at the same time.
This category has the following 7 subcategories, out of 7 total.