The North Troop Tree

Northern troops consist of spearmen, heavy infantry, shock infantry, heavy cavalry, and yeomen. Northern levies can be recruited from The North's starting villages. Sellsword variants of Northern soldiers can be recruited from the taverns of Barrowton and White Harbor.

Troop Tree (v6.2)

Northern Levy
Northern Man-at-Arms	Northern Spearman
Veteran Northern Man-at-Arms	Veteran Northern Spearman	Northern Yeoman
Elite Northern Man-at-Arms	Elite Northern Spearman	Veteran Northern Yeoman
Northern Household Guard	Northern Vanguard	Elite Northern Yeoman
Mounted Northern Serjeant	Northern Lancer

Troop Tree (v7.1)

Northern Troop Chart (All troop names in the chart above are missing the word Northern, e.g. Veteran Man-at-Arms is Veteran Northern Man-at-Arms in-game.)