PvP is actually an inaccurate term, but it includes all the battles you do in the game.
This is versus the military units in provinces and by attacking your neighbours.
You gain Medals through winning in the PvP Tower competitions.
These start on Monday and end on Sunday, every week.
By conquering certain provinces you can unlock PvP towers of each Age. You will gain points for every battle you do and will automatically compete in the PvP tower from the Age of the highest Age unit in your army.
For example: If you have 4 Spearman and you have the Bronze Age Tower unlocked, you will compete in the Bronze Age Tower for every battle you do with those 4 Spearman.
If you have 4 Spearman and 1 Archer and you have the Iron Age Tower unlocked, you will compete in the Iron Age Tower, because the Archer is the highest unit in your army.
- Lodroth