Players in Medieval Empires can now switch their faction using a Faction Change Item which can be purchased through the in-game shop and can be then found in the inventory. 
 in-game store for purchasing Faction Change Item  

After the faction switch to Crusaders, the following changes would happen:

  • All ongoing trainings would be discarded but research and construction would continue

  • Art assets for the town would change
  • For buildings and researches the level and functionality would remain the same
  • Basic and Research units of the Turkish faction would be locked and unlocked for Crusader faction

Before switching factions, you can view and upgrade your Turkish units as usual. Once you switch to the Crusaders, you will no longer be able to upgrade your existing Turkish units. Instead, you'll need to train and upgrade new Crusader units. However, you can use all units in battle, regardless of their faction.

  • Players would keep their old units but would not be able to upgrade them 
  • The County Unlock Units are not affected by faction switch as long as your landowners allow both factions on their lands