Improvement (upgrades) on battle units

Improvement (upgrades) on battle units.

Unit Maximal level of upgrade
Pikeman 10
Swordman 10
Axeman 10
Maceman 10
Light cavalry 10
Heavy cavalry 10
Ram 5
Ballistician 5
Catapult 5
Trebuchet 5
Shortbow archer 10
Longbow archer 10
Crossbow archer 10
Archer cavalry 10

Updates in Blacksmith are divided into two parts:
1. Updates of weapons - each gives bonus to attack of units.
2. Updates of armors - each gives bonus to life of units.

For each level of update you need same level of your Blacksmith.

The special units (Huskarle, Janissary, Drummer, Tangra priest, Monk, Battle-axeman, Teutonic knight) cannot be upgraded.