In Civilization 7, your army upgrades from a stick-waving barbarian to a powerful knight, which requires a reasonable unit upgrade strategy. Here are the steps to upgrade the unit:

Unit Upgrade Guide

1. Research and develop higher-level units: Only after unlocking more advanced units can you upgrade. Without R&D, there will be no upgrades.

2. Spend gold coins: Upgrade is not free. You need to pay a certain amount of gold to get stronger units.

3. Ensure that the unit is in friendly territory: Upgrades can only be done within your territory. It is impossible to upgrade in the middle of the battlefield - your army is not that fast.

Upgrade instructions

• Upgrade won't heal the unit: If your swordsman is left with only a trace of blood, the upgrade won't miraculously save him. He will only become a stronger, but still dying unit.

• Units reset in the next era: When a new era begins, your army will reset. You will get new units based on your settlement, so don't worry too much about upgrading all units before the times change.

• Low-level units disappear: Once you unlock more advanced units, you can no longer produce older versions of units. Cannot fall back.

Commander Upgrade

The commander's upgrade method is different from that of ordinary units. Commanders upgrade by gaining experience points in combat, and after the upgrade, you can use one of five promotion routes to boost them. Unlike ordinary forces, commanders retain their promotions at the beginning of a new era, making them valuable long-term assets.

This is everything you need to know about upgrading in Civilization 7. Now, make your outdated warriors less awkward anymore!