As for organization :
From 1805 the infantry regiments had 2 battalions of 4 companies of musketeers (the company of grenadiers in each battalion being collected as the guard grenadiers)
The company organization was :
1 Capitan
1 Premier-Lieutenant
2 Second-Lieutenants
1 Feldwebel
1 Sergeant
1 Capitaine d'armes
1 Fourier
3 Corporale
1 Pfeifer
2 Tambours
10 Schützen
80 Gemeine
The organization 1803-1805 was only slightly different.
At the beginning of 1808 they adopted regiments of 2 battalions, each battalion of 1 grenadier, 1 voltiguer and 6 fusilier companies
The company organization was :
1 Capitan
1 Premier-Lieutenant
1 Second-Lieutenants
1 Feldwebel
3 Sergeanten
1 Fahnenjunker
1 Fourier
8 Corporale
1 Zimmermann
2 Tambours
120 Gemeine (of which 2 sappers)
They kept this organization through 1813.
I do not know, off hand, if it changed in 1814.
The Jäger battalion also started with 4 companies, and adopted French organization from March 1809. The conversion was not complete as the 1809 campaign started, and the battalion took the field with only 5 companies. Complete at 6 companies in 1810, the name was changed to "Leichtes-Infanterie-Bataillon".
I don't now who actually carried flags.
There do not seem to be junior officers on the regimental staff to carry the flags (like French porte-aigles) – so it looks like NCO's carried the flags.
The "Fahnenjunker" may have been really to carry the flag or just a nice name for a cadet or officer candidate rank, or both.
(For our German-speaking colleagues, if I mangled the German names above a little, I am sorry …. I looked this up in French sources.)
- Sasha