Units

Once a unit has spent 3 Orders moving, it will become Fatigued. A Fatigued unit can still be moved but it will cost 100 Training and each movement will require twice as many  Orders.

Each time a unit fights it will gain 10 XP. Once it gains enough XP (100 x level) it will level up. Alternatively Training can be used to fill the missing XP and level up. Each unit can only level up once per year, up to a maximum of 5 levels. Each time a unit levels up it will be able to pick between 4 permanent random bonuses:

Certain units produce a ZOC, or Zone-Of-Control, in an area around them. ZOC prevent enemy units from moving.

Generals
Generals are characters assigned to units to grant them extra abilities. The character must be from the same Family as the unit, with the exception of the nation's Leader. Adding or replacing a General costs 100 Training and consumes the unit's remaining Movement points. Characters must be younger than 50 to be assigned as Generals and will retire at the age of 60. If the unit is attacked the General has a 1% chance of being injured.

Unit stats
Units have the following stats to keep track of:
 * HP: All units start with 20 HP, or Hit Points. If a unit runs out of HP, it will be destroyed. A unit will regain 1 HP each turn it is within the borders of its Nation and can also be given 5 HP at the cost of 1 YIELD ORDERS.png Orders and the unit's remaining Movement points.
 * Strength: How much damage the unit will deal.
 * Movement: How many hexes the unit can move for each YIELD ORDERS.png Order. Hills, Sand, crossing a River, Scrub and Trees all add an extra movement point. Rivers and Roads within owned territory require only 2/3 of a movement point.
 * Vision: How many tiles around the unit are the tiles visible. Only applies to already discovered tiles.
 * Range: Only appears on Ranged units, it determines from how many hexes away from the target can the unit attack.

Civilian units
Civilian units are available from the start. They can harvest resources and have abilities that makes them the most crucial units of a Nation. Civilian units cannot attack and have a Defense of 3.

Melee infantry units
Melee infantry units are the earliest type of military units available. Most melee infantry can use the Fortify action, which grants +5% Defense per turn, up to a maximum of +25% after 5 turns. Each time it gets attacked by an adjacent unit it loses 5% of the gained Defense. Melee units have the following characteristics: Melee infantry have two upgrade paths: one that focuses on fighting other melee infantry and one that grants them a Polearm. Polearm units are immune to Rout and their ZOC cannot be ignored by mounted units.
 * Can only attack adjacent units.
 * When attacked by adjacent units they deal 1 HP damage to the attacking unit.
 * Has ZOC.
 * +25% Defense from Urban.
 * -50% Attack Across River.

Ranged infantry units
Ranged infantry units focus on attacking enemy units from afar. They have the following characteristics:
 * Can attack units from distance.
 * Has ZOC.
 * +25% Defense from Urban.
 * -25% Attack Into Scrub.
 * -50% Attack Into Trees.
 * -20% per tile distance to the target.

Mounted units
Mounted units do not have a ZOC but instead are able to ignore the ZOC of enemies. They have the following characteristics: Mounted units have two upgrade paths: one focused on melee and one focused on range.
 * Can only attack adjacent units.
 * When attacked by adjacent units they deal 1 HP damage to the attacking unit.
 * +25% Melee Attack into Flat and Clear.
 * +50% Strength vs Siege Units.
 * -50% Attack Across River.
 * They require a certain natural resource to be rescruited.

Siege units
Siege units are high damage support units. They have the following characteristics: Some siege units require spending a turn on the Unlimber action to be able to attack.
 * -50% Road Movement Cost.
 * +50% Attack Into Urban.
 * -25% Attack Into Scrub.
 * -50% Attack Into Trees.

Ships
Ships are units that can only be constructed in Cities adjacent to a water tile. There are three tiers of Ships and each one can be upgraded to the next tier. They have the following characteristics:
 * Can only move on water tiles.
 * Can Harvest Resources.
 * Has ZOC.
 * Can use the ANCHOR.png Anchor ability, which allows land units to traverse water tiles in the Ship's ZOC.

Nation units
Each Nation has access to two unique units, which do not require any technology. The first unit requires a Stronghold improvement in the City and the second one, which the first unit is upgradable to, requires a  Citadel improvement in the City.

Tribal units
Tribal units can only be recruited by Tribes. They have the following characteristics:
 * Cannot be promoted or earn XP.
 * -2 Fatigue Limit.