Germans in America: A Concise History by Walter D. Kamphoefner (review).

Of particular interest to Kamphoefner are German military and political roles in both the Civil War and World War I. His in-depth research and numerous publications have solidified his reputation as the foremost scholar on the subject. Walter Kamphoefner has devoted his professional life to researching the subject and has emerged as one of the preeminent scholars in the field. [Extracted from the article]