Ok – a more learned answer from "moi" taken from the "OB Compendium" which I built for the computer wargame "Republican Bayonets on the Rhine" which released two weekends ago. This extract is from the 1796 Rhine Campaign OB and its for FML O.Wallis Right Division for the "Armee der Neider Rheins"
Hope this helps you get some idea of the sizes:
AG/RW (Brigade, 2 361 infantry)
GM Ulm (E C)
1/Wenkheim IR35 (Infantry, 791 men, C)
2/Wenkheim IR35 (Infantry, 782 men, C)
3/Wenkheim IR35 (Infantry, 788 men, C)
1/RW (Brigade, 4 925 infantry, 6 guns)
GM Vogelsang (E C)
1/Gemmingen IR21 (Infantry, 821 men, C)
2/Gemmingen IR21 (Infantry, 830 men, C)
3/Gemmingen IR21 (Infantry, 827 men, C)
1/Erbach IR42 (Infantry, 820 men, C)
2/Erbach IR42 (Infantry, 811 men, C)
3/Erbach IR42 (Infantry, 816 men, C)
Lt Brigade Bty (Artillery, 6 guns, B)
2/RW (Brigade, 2 483 infantry, 6 guns)
GM Kempf (E C)
1/Kerpen IR49 (Infantry, 821 men, C)
2/Kerpen IR49 (Infantry, 834 men, C)
3/Kerpen IR49 (Infantry, 828 men, C)
Brigade Bty (Artillery, 6 guns, B)
IR 21, 35, 42 are all "German" regiments
IR 49 was listed as "Hungarian" but might have been Northern Italian.
Here is another extract from the same army for 1796:
4/4K/AdNR (Brigade, 1 899 infantry)
GM Schottendorf (E C)
1/Sztaray IR33 (Infantry, 958 men, C)
2/Sztaray IR33 (Infantry, 941 men, C)
IR 33 obviously a Hungarian regiment
5/4K/AdNR (Brigade, 2 482 infantry, 8 guns)
GM Oranien (E C)
1/Kaiser IR1 (Infantry, 790 men, B)
1/S.Gyulai IR32 (Infantry, 848 men, C)
2/S.Gyulai IR32 (Infantry, 844 men, C)
Brigade Bty (Artillery, 8 guns, B)
6/4K/AdNR (Brigade, 3 055 infantry, 8 guns)
GM Staader (E C)
1/Clerfayt IR9 (Infantry, 747 men, D)
1/Württemburg IR38 (Infantry, 762 men, D)
1/Murray IR55 (Infantry, 791 men, D)
1/Beaulieu IR58 (Infantry, 755 men, D)
Brigade Bty (Artillery, 8 guns, B)