Major Units represent your kingdoms heroes, leaders, ultra-powerful magicians, and powerful monsters allied with you. They are your most powerful units for the have a number of special abilities. Every Army starts with a certain number of Major Units. In addition there are a number of Neutral Major Units sprinkled about the map board who can be emissaried. They are very expensive costing on average 50 gold units. You can recognize a Major Unit in an Army List because their statistics are italicized.
Unlike Minor Units, Major Units can not be bought. In addition to emissarying them, heroes can sire offspring. There are two distinct flavors of Major Unit: Hero and Monster. It's not that one is good and the other bad, it's that one can sire offspring and the other can't. Heroes also age and die eventually, but Heroes get experience which can increase their stats.
Other differences between Major Units and Minor Units is that Major Units do not emit a Zone Of Control. Major Units can't carry commodities. Major Units can have spells.
