text: Each player begins play with a level 1 hero at the start of the game.  Unlike other units, additional heroes cannot be produced by cities or discovered in ruins or hidden tombs.  The only way to gain a new hero is to accept an offer in exchange for money.  Newly hired heroes often come with allies.  Heroes have the potential to be the most powerful unit in the game.
  Cities
  The game flow of Warlords typically involves capturing the cities. The default winning condition is to conquer most of the cities on the map.
  The cities are the main source of new units in the game. Up to four different units can be available in a single city with an ability for player to buy production — to replace the currently available units with others at some initial cost. Once the player owning the city orders production of a unit, the city will provide new units of a kind until another order is issued. The production may be forwarded from one city to another, allowing the player to concentrate armies on the borderline or in another location of strategic interest.
  The cities also serve a defense purpose: the defenders of a city enjoy the "city bonus", which increases armies' strength. Several units have the special ability to cancel the city bonus.