On 4 April 1810, Sartorius commanded the boats of the "Success" and brig , at the destruction of two vessels laden with oil, while under a heavy fire, on the beach near Castiglione, and on the 25th he assisted at the capture of an armed ship and three barques close to the castle of Terracina. After serving with the flotilla at the defence of Cádiz he was promoted to commander on 1 February 1812, and was appointed to the gun-brig in August 1812, and then the brig-sloop in July 1813, both on the Home Station. Promoted to post-captain on 6 June 1814, Sartorius commanded the 20-gun from December 1814 until August 1815, and was present at the surrender of Napoleon Bonaparte to Captain Frederick Maitland of at Rochefort on 15 July 1815. He went on to command the fifth-rate during 1828.