How does the US Civil War armies compare to contemporary European armies from the Austrian-Prussian war and the Franco-Prussian war?

by kaspar42
hajena123

These questions pop up all the time, use the search tab. This one is even phrased almost exactly like yours.

http://www.reddit.com/r/AskHistorians/comments/17tovc/how_would_us_troops_in_the_civil_war_era_have/