Starting the war of 1866

[Charon]

Nafziger gives the strength of the 3 Oldenburg battalions as 3072 giving a strength per battalion of 1024 - not sure how accurate this is though as he seems to give a similar figure for other battalions in the Army of the Maine. I suspect that these are establishment strengths and that the real figures are much more like the 2700 you've quoted from Sutherland's book

[Chad]

Sutherland always seems to present the information for the various States at the strength their forces had at the point at which they went on campaign. Most of the information suggests variable battalion sizes and therefore regimental sizes throughout the book.

Chad