Complex sentence: He was a military surgeon during the First War of Schleswig (1848-1851), and served as Surgeon General of the Kingdom Hanover in the German war and with the Prussian army during the Franco-Prussian War.
Split into simpler sentences: He was also a military surgeon during the First War of Schleswig (1848-1851). He served as Surgeon General of the Kingdom Hanover in the German war and in the Prussian army during the Franco-Prussian war.