Grenadier are almost always selected among the tallest, most fit, and/or most skilled out of the jeager or infantry regiments. Grenadier will recieve drill from the "Kelsall" drill method and usally on promotion are adapt to fighting with a sword. Grenadier are allowed grenade training, more importantly usally can work with explosives and handy work.
Promoted Grenadier are awarded light blue and gold uniforms, picklehauben or grenadier caps [dependant on regiment, sometimes tusle]. Most grenadier do not have a back pack and have light weight clothing, though highly stylized. As far as weaponry, grenadier are given heavy sabers and some pot grenades. They are known to pick up weapons from the battlefield, and can use sapper hammers to crack the skulls of enemies.
Most tatics depend on commander, however grenadier usally throw a few rounds of grenades and then charge, grenadier regiments uslaly do not last when it comes to order, with grenadiers spreading across the battlefield fighting hand to hand, but resupplying the man power of the regiments after they reform is usally a rare thing, grenadiers usally suffer some of the least casulties in battle.