Unit lines are groups of units that upgrade in a certain order (e.g. in the Militia Line, the Freeman upgrades to the Town Militia, which ups further).
“The Lancer Line is a line of medium anti-cavalry units taking up one and a half population...Lancer Line
“The Spearman Line of units groups the basic anticavalry units. It consists of the Spearman and...Spearman Line
“The Militia Line forms the basic infantry of all civilizations in Age of Chivalry Hegemony...Militia Line
“The Scout Line of Light Cavalry consists of lightly armed, but very fast riders. Sixteen of the...Light Cavalry Line
“The Knightly Infantry consists of heavily armed soldiers taking up one and a half population...Knightly Infantry
“The Skirmisher Line offers cheap and swift supporting archery units that excel against other...Skirmisher Line
“Combining the mobility of a horse with the range of a bow or crossbow makes Cavalry Archers and...Mounted Archery