Career
Mountain was commissioned as an ensign in the 96th Regiment of Foot on 20 July 1815. He fought at the Battle of the Bogue in February 1841, Battle of Canton in May 1841 and the Battle of Amoy in August 1841 during the First Opium War. He also saw action at the Capture of Chusan in October 1841, the Battle of Chinhai in October 1841 and the Battle of Ningpo in March 1842 as well as at the Battle of Chapoo in May 1842 and the Battle of Chinkiang in July 1842.
He served as Adjutant-General in India from February 1849 until he died from illnesses following an attack of cholera in February 1854.