Ohzoku/Cavalry series

Stats
The cavalry series of units features higher movement and faster speed, at the cost of lowered defense. The Heavy Cavalry has slightly better armor, which slows them down a little. The Archery Cavalry has even lighter armor than regular Cavalry units, giving them an additional speed boost.

Skills
The cavalry series of units pretty much have identical skill sets, available at the same rank. The Archer Cavalry don't have the Roar skill for maxing out self moral, but has many bow-related skills instead.