For example, the Highland Nobles read

Code:
type             Highland Nobles
dictionary       Highland_Nobles      ; Highland Nobles
category         infantry
class            heavy
voice_type       Heavy
banner faction   main_infantry
banner holy      crusade
soldier          Highland_Nobles, 48, 0, 1.2
attributes       sea_faring, hide_forest, hardy, can_withdraw
formation        1.2, 1.2, 2.4, 2.4, 4, square
stat_health      1, 0
stat_pri         14, 6, no, 0, 0, melee, melee_blade, slashing, sword, 25, 1.3
;stat_pri_ex      0, 0, 0
stat_pri_attr    no
stat_sec         0, 0, no, 0, 0, no, melee_simple, blunt, none, 25, 1
;stat_sec_ex      0, 0, 0
stat_sec_attr    no
stat_pri_armour  5, 4, 0, metal
;stat_armour_ex   5, 7, 0, 0, 4, 0, 0, metal
stat_sec_armour  0, 0, flesh
stat_heat        4
stat_ground      1, -2, 3, 2
stat_mental      9, normal, trained
stat_charge_dist 30
stat_fire_delay  0
stat_food        60, 300
stat_cost        1, 490, 175, 90, 70, 490, 4, 120
armour_ug_levels 2, 3
armour_ug_models Highland_Nobles, Highland_Nobles_ug1
ownership        scotland
era 1            scotland
era 2            scotland
;unit_info        14, 0, 9
The number 2 is bold above shows they have light mail armour. Is the 3 following it code for the level of blacksmith that upgrades to the next armour model? Is the 3 the actual code itself?