Wynyard was commissioned as an
ensign in the
First Regiment of Footguards on 6 June 1778. He took part in the expedition to Holland in February 1793 and saw action at
Arnhem in November 1794 during the
French Revolutionary Wars. He retired from his post in April 1816 and was promoted to full
general on 12 August 1819. He lived his final years in London at 2
Upper Brook Street,
Mayfair. ==References==