The Great General is a civilian unit in Civilization VI, a 
Great Person Great Person specialized in land warfare. It can be attracted once enough 
Great General points are earned (and can be rushed with 
Gold or 
Faith through Patronage). Great General points are primarily earned through Encampment districts and buildings.
All Great Generals provide +5 
Combat Strength and +1 
Movement Movement to all land units within 2 tiles. This bonus, however, is valid only for units of the General's era and the following era. Great Generals can be expended at any point to activate their Bonus Ability, which varies depending on the specific General.
Great Generals
| Name | Era | Bonus Ability |
|---|---|---|
| Boudicca | Classical | Convert adjacent barbarian units |
| Hannibal Barca | Classical | Grants one promotion level to a military unit |
| Sun Tzu | Classical | Creates the Art of War Great Work of Writing (+4  Culture, +4  Tourism)
|
| Æthelflæd | Medieval | Instantly creates Knight unit |
| El Cid | Medieval | Forms a corps out of a military land unit |
| Genghis Khan | Medieval | Grants a free promotion level, +25% combat bonus for mounted units |
| Ana Nzinga | Renaissance | Gain a free  Envoy Envoy
|
| Gustavus Adolphus | Renaissance | Instantly creates a Bombard unit |
| Jeanne d'Arc | Renaissance | Creates a  Relic
|
| Napoleon Bonaparte | Industrial | Creates an army out of a land unit |
| Rani Lakshmibai | Industrial | Instantly creates a Cavalry unit with one promotion |
| Simón Bolívar | Industrial | Gain 2 free Envoy Envoys
|
| Douglas MacArthur | Atomic | Turns a Heavy Cavalry unit into a Tank and provides 1 free promotion. |
| Dwight Eisenhower | Atomic | +5%  Production towards military units.
|
| Georgy Zhukov | Atomic | +50% Flanking bonus for all land military units. |
| Sudirman | Atomic | Grants 1 promotion level and +100% combat experience to a military unit. |
| John Monash | Modern | Grant 1 promotion level and +75% combat experience to a military unit. |
| Marina Raskova | Modern | Gain +1 Air unit slot in this district. |
| Samori Touré | Modern | Instantly creates an Infantry unit with one promotion level. |
| Ahmad Shah Massoud | Information | Turns itself into Modern AT units with 1 free promotion. |
| Vijaya Wimalaratne | Information | Grants 1 promotion level and +100% combat experience to a military land unit |
Strategy
Unsurprisingly, most Great Generals' abilities have direct military applications - some create units, some allow units to acquire XP more easily, some grant free promotions, some form a single unit into a corps or army, and some provide permanent bonuses to the abilities, production, or storage capacity of military units. They also provide Combat Strength and Movement Movement bonuses to nearby units, allowing you to strike at your enemies harder and faster. However, since warfare is constantly changing with the development of new weapons and technology, a Great General's military knowledge eventually becomes antiquated, and the General ceases to provide Combat Strength and Movement Movement bonuses to units that are two eras more advanced than he or she is. When it comes time to upgrade your army, be sure to retire any Great Generals whose bonuses have become obsolete.
Civilopedia entry
Every age of civilization has had its “great” generals, those who change the course of history by being cleverer, braver, or simply luckier than their peers across the battlefield. These are the men who can convince other men to follow them into hell … and perhaps out the other side. They are innovators in the ways of death, inventing new weapons, formations, tactics and strategies to win wars. Or finding new benefits in the old ways of killing. Every person reading this can name dozens of great generals, for their names echo down to us in legends, histories and monuments. Some are leaders of their people, warrior-kings and president-generals; if not already the head of the government while becoming “great,” they are often awarded (or cursed with) that mantle afterward. And then they write their memoirs, provided they survive their wars.
