This is the first time this character will be speaking, and he will be elderly, so his english will be horrible. I used barbaric english, so he will converse in german, which means that I can can write his lines in standard english.
I thought that there were lots of german socialists because of the 1848 revolutions. I thought it would give a flavor if the cosmopolitan character of the army. There were lots of problems with the germans being enthusiastic, but incompetent soldiers. Like with Hunter and Fremont.
I also thought it would be a good idea to show that the Germans brought their problems with them on the boat, hence all the different kinds of german, catholic, jewish, calvinist, lutheran in the unit.