Winter is Coming (asoiaf)

Umbers- 

Heavily armored berserkers. Generally, mace, axe or blunt weapon wielding warriors. Vanguard

Mormonts-

Heavily armored berserkers. Generally, mace, axe or blunt weapon wielding warriors. Vanguard

Burleys (Mountain Clans)-

Light armored. Skilled in ambushes, traps and CQC.

Karstarks-

Spearmen, small cavalry

Wolfswood-

Archers, infantry

Hornwood-

Archers, spearmen

Mudd-

Sailors, swordsmen

Bolton-

Swordsmen, small Cavalry

Manderly-

Sailors, Cavalry

Ryswell-

Cavalry

Dustins-

Swordsmen, Cavalry

Flint's Finger-

Archers, sailors, mixed infantry

Reeds-

Archers, skilled in ambushes traps assassination spying etc.

Starks-

Mix of everything other than sailors with biggest army in the North.

Winter Wolves-

Elite Cavalry unit, comprised of light cavalry, heavy cavalry and horse archers. Keeps roads safe and provides escort to merchants.

Winter Guard-

Elite infantry unit comprised of light and heavy infantry of swordsmen and pikemen and archers. Guards' strategic places like Moat Cailin and causeway, Great Canal, small keeps on coast to guard against ironborn.

Grey Cloaks-

City Guard of Winter City.