Kalmuks (ETW Unit)
These light cavalrymen are superb horsemen, expert in skirmishing and harassing an enemy.
Overview
There is a long tradition on the steppes of fighting from horseback. Children are put in the saddle before they can walk, and this makes them almost part of the horse. In previous centuries, accurately firing a bow while riding at speed requires a man who has exceptional ability with both the weapon and a horse. Steppe warriors can control their horses using their knees, and without the need to hold the reins they can use weapons easily and well. Their tactics have always involved galloping up to a slower enemy, delivering a devastating volley, and then riding away again. This way of warfare has survived in the era of pistols and muskets, although most steppe warriors carry numerous weapons (if they can) to avoid reloading in the heat of battle.
Historically, all the eastern nations had an ambiguous relationship with the steppe peoples. They both feared them and wanted their services. This allowed the more cunning steppe tribes to keep a measure of autonomy when other natives were being ruthlessly crushed.
Details
Kalmuks are a unit from a previous age that are increasingly outclassed. Their nature as bow wielders gives them more disadvantages than advantages; they have a tremendous range comparable to line infantry meaning they can fire with impunity. However this is not a great as an advantage as it may seem, they have terrible accuracy and reload rate. Along with all that they have morale comparable to the lowliest of militia. This means they are best used in a harassment role on your flanks to deter enemy cavalry, do not attempt to engage enemy infantry in hand to hand combat, It will not end well.