The 'data/export_descr_unit.txt' files contain the names of all the units and which factions can have them. 'data/export_descr_unit_early.txt' covers the 970, 1080, and 1200 campaigns; 'data/export_descr_unit_high.txt' covers the 1300 campaign, 'export_descr_unit_late.txt' covers the 1400 campaign, and 'export_descr_unit_later.txt' covers the 1500 campaign. Though some units are declared available to all factions in these files I many not allow all factions to recruit them in the 'export_descr_buildings.txt' files.

Units with multiple armour upgrades have several battle models (some many not appear in this mod since I require a certain level of Blacksmith buildings to recruit some units).