The Imperial Conspiracy Veteran Fighter is a Tier 5 infantry special unit. These units will appear during the conspiracy of the main story, and they can’t currently be actively recruited. Instead, you’ll need to hold them as prisoners until you can recruit them. Alternatively, you can use the console to manually insert them into your army if you really like them.
There are generally better troops than these, but they do provide a decent balance between reasonably good stats and relatively cheap wages, if you manage to find and recruit some. Once the conspiracy quest has begun, you’ll begin to see them roaming around your territory. They have a basic wage of 12 denars and they can’t currently be upgraded.
Imperial Conspiracy Veteran Fighter Skill Values: