johan andreas ohme started his military career as an artillery cadet in 1764. nine years later he went to denmark and was on the 4 february appointed second lieutenant. but his stay in denmark was to be short since he only a month later was sent to norway as a first lieutenant in the 14th artillery company in trondheim. in 1787, ohme returned to denmark and was promoted to captain on november 23, and later major on 12 june 1795.