 After the war, Parry continued to be associated with the Royal Welch Fusiliers.By November 1918 he had achieved the rank of Major, by May 1919 he had risen to the rank of Colonel and by August 1919 he was Lieutenant-Colonel.He ended up Lieutenant-Colonel Commanding the 5/6 Royal Welch Fusiliers and was Military Member of the Flintshire Territorial Force Association.