Jägers
The Jägers were armed with rifles (regular or as gifts from huntsmen and foresters) and "were always considered a crack formation." They were the most professional elite of the infantry. Some were huntsmen and foresters and experienced marksmen and experts at concealement in wooded area. Unfortunately there were only very few formations of jägers.
In 1815 additional battalion of jägers was raised from the Saxon Jäger Battalion, Saxon 'Volunteer Banners' and jäger company of Russo-German Legion. The Saxons however had little enthusiasm for the war in 1815 and serving in the Prussian army.
Volunteers Jägers
The Volunteers Jägers emerged in 1813 and were "members of the educated middle classes" - they uniformed and armed themselves with hunting rifles and carbines or other purchased firearms. There were several thousands of such volunteers organized into small detachments. The volunteers had the possibility of becoming NCOs and officers in the regular troops.
This is what Loraine Petre writes about the volunteer-jagers: "... young men of independent means, of from 17 to 24 years, equipped and armed at their own expense, or at that of the neighberhood. They were those who did not already belong to the army, and had no sufficient cause for exemption. ... Their numbers are uncertain, but they probably never exceeded 5,000 infantry, 3,000 cavalry and 500 artillery and engineers. Their moral was probably greater than their military value, though later, they formed good schools for the training of officers and under-officers, in supplying whom there was considerable difficulty." (Petre - "Napoleon at War" p 113, publ. 1984)
Fusiliers
The Fusiliers were agile men who served in line regiments as light infantry. They were led by inteligent, fit and young officers. The Fusiliers were armed with ordinary muskets. The Fusileirs were the shortest lads in infantry, just 157cm and slightly above, only the guard fusiliers were between 166cm and 173 cm. Instead of the white leather belts of line infantry they wore black ones. There were no other major differences in uniforms.
Schützen
Prussian Schutzen (rifleman) The Schützen were armed with rifles with front and back sight. These were excellent marksmen although - unfortunately - were partially armed with smoothbore muskets instead of rifles. The Schützen were intended to fight in similar way as the Jägers.
There was only a single battalion of Silesian Schützen (Schlesisches Schützen Bataillon) . After 1814 war an additional battalion of Schutzen was formed from volunteers from Neufchatel. They joined the Guard Infantry.
In 1814 at Vauchamps, two companies of the Prussian Silesian Schutzen (240 riflemen) found themselves with a single squadron of Polish Guard Lancers sitting on their line of escape from the disaster that was befalling on their brigade.
The Schutzen formed a column and charged forward cutting their way through the enemy cavalry. This is one of the few instance where infantry actually charged with bayonets against cavalry ! The casualty report lists only shakos and bayonets as the result of actual physical contact with the horsemen.
Additionally there were two guard light battalions:
Guard Jäger Battalion (400-450 men)
Guard Schützen Battalion (400-450 men)
From here incase you want to read more -
http://www.napolun.com/mirror/napoleonistyka.atspace.com/Prussian_infantry.htm#prussianlightinfantry
