A unit that survives combat will gain "experience points" (XPs). Once the unit has acquired enough XPs, you may expend them to acquire "promotions" for that unit. There are a large variety of promotions in Civilization VI. Each gives a unit special advantages in battle.
A unit that survives combat will gain "experience points" (XPs). Once the unit has acquired enough XPs, you may expend them to acquire "promotions" for that unit. There are a large variety of promotions in Civilization VI. Each gives a unit special advantages in battle.