The price depends on inflation, slider choices, and several other factors. Each regiment recruited depletes the manpower pool by 1000. Infantry tend to take half as long to recruit as cavalry or and a third of the time for artillery. Levies are troops who are recruited and then join your armed forces. Several modifiers change the cost of units, but the base costs, set in defines.txt, are 9 for infantry, 21 for cavalry, and 30 for artillery. There are two classifications of regiments which can be recruited through the course of the game, mercenaries and levies. Each regiment is classified as either infantry, cavalry or artillery. The regiment is the basic land military unit that consists of 1,000 soldiers. Units of similar technology levels have different strengths and weaknesses: some favor offensive or defensive, others favor shock or fire damage. Technology determines what units are available to choose from. When the preferred unit type is changed, all units of that type have their morale set to zero. All the units already built will be automatically changed to the new preferred one, except for mercenary units. Owned provinces that other countries have cores own may recruit the preferred units of that country (even if from a different technology group). Core provinces will produce preferred units. The military system is based on a model of 'preferred units' for land units.
