At the storming of the fort of Turnioul, he volunteered and led the assault with fifty dismounted dragoons.

By 1806, he was serving with the 21st Fusiliers during the Sicilian campaign, which concluded the War of the Third Coalition with the Battle of Maida.

He married shortly afterwards and spent his time between France and Hillingdon, where he leased nearby Hayes Park House from 1829 to 1843.

He was appointed Governor of Scarborough Castle and was created Companion of The Most Honourable Order of the Bath (C.B.)

He died at his home in Colham Green,[2] Hillingdon, Middlesex on the 5 April 1852,[3] was buried at St Mary's Church, Hayes, and was remembered by his former comrades at the 1852 Waterloo Banquet, shortly ahead of the Duke's own death.