Complex sentence: Hans Gram Holst became a Sergeant at "1st Smaalenske Infantry Regiment" on 13 March 1752, later he was also promoted to Lieutenant of the same regiment in 1759 and finally Second lieutenant on 11 November 1761.
Split into simpler sentences: Hans Gram Holst became a Sergeant at "1st Smaalenske Infantry Regiment" on 13 March 1752. Later he was promoted to Lieutenant of the same regiment in 1759 and finally Second lieutenant on 11 November 1761.