Complex sentence: After having been employed as a lieutenant with the Funen light dragoons in Odense, in 1820, he became a teacher at the 1820 Army Cadet Academy ("Landkadetakademiet") in Copenhagen in Latin and grammar.
Split into simpler sentences: After having been employed as a lieutenant with the Funen light dragoons in Odense. In 1820, he became a teacher at the 1820 Army Cadet Academy ("Landkadetakademiet") in Copenhagen in Latin and grammar.