I have a Edward A V Hilgenberg in my family tree. I don't know much about him but was told he came from Germany or Prussia. In 1841 he married my gg grandmother Barbara Gates 1825-1880. I would assume that he came to America around 1840. They had 1 daughter my great grandmother, Minerva 1842-1915. They lived in Belmont Co., OH. She married Samuel Thomas in 1862 and they moved to Monroe Co., OH. Their families lived in Monroe Co. with the exception of one son, he lived in Belmont Co.
I have a picture (tin type) of Edward in a military uniform. I ask someone that studies the military and this the info he gave me.
( It appears that Herr Hilgenberg was serving in the Prussian Army, the uniform is reminiscent of later German uniforms from the late 19th century. I do not think that he served in the Civil War, unless he was involved in the uprisings connected with the Revolution of 1848 against Prussian authority.
Do you have anything about him? Thanks