Thought I would post this here, this is the 41st NY "Jaegers", a regiment of german immigrants during the American civil war.
A little about their uniform:
They started out with uniforms in Prussian Jaeger colors, with green jackets, green hats, grey trousers and all trimmed in red. They were also issued gaiters and instead of the infantry cartridge box worn with a strap over the should, they adopted 2 cavalry cartridge boxes worn on the belt. By the the time of this photograph they have adopted the blue(Probably due to the expense of "Unique" uniforms vs G.I.), but with dark blue pants which were usually only worn by officers.
A surprisingly large number of immigrants fought for the north:
German c. 200,000
Irish c. 150,000
British c. 150,000
Canadians c. 50,000
others c. 75,000 (mostly European)