Roland is a Charlemagne kingdom prestige hero and requires 43,000 prestige to unlock.

Unit Type - Flag Bearers: Raise friendly morale while lowering enemy morale. Spell - Morale Boost: Raise friendly gambit hero morale by 34 and lower enemy gambit hero morale by 5.

Roland is slightly better than Joan of Arc or William the Conquerer. The difference is small and typically not worth the time to train a new hero if you already have Joan or William.