 Complete the following phrase:  After college, Mahon continued his military career. On 18 December 1790, he purchased a lieutecy in the 47th Regiment. He obtained a captaincy in the newly raised 33rd Light Dragoons in 1794, and transferred into the 32nd Light Dragoons as a major on 26 November 1794. Major Mahon transferred into the 24th Light Dragoons on 30 April 1796, after the 32nd was disbanded. On 1 January 1797, he became a lieutet-colonel in the 9th Light Dragoons. Mahon was in command of the garrison of Carlow when the 