As well as playing cricket, Donop was soon selected to represent his regiment at football, and was in the Royal Engineers' team which reached the 1874 FA Cup Final. In the final, at Kennington Oval on 14 March 1874, Donop played at inside left. The Engineers lost 2–0 to Oxford University. The following year, the Engineers defeated Oxford University in the semi-final to set up a second consecutive appearance in the final, this time against the Old Etonians. The final was played at Kennington Oval on 13 March, with Donop now playing at centre half for the Engineers. The game ended in a goal-less draw. In the replay, at the same venue on 16 March, the Engineers won 2–0. Donop also gained two caps for England in friendly matches against Scotland. He made his international debut on 8 March 1873, in the second official match played between the two countries, which England won 4–2. Donop, playing in the centre of the defence, was described as a "stalwart of the Royal Engineers team". He made his second international appearance two years later, on 6 March 1875, in a 2–2 draw. Donop continued to represent the Royal Engineers until he was in his mid-thirties: in November 1886, he scored three goals in a match against the Royal Military Academy
Later career
Donop was promoted to Captain in December 1883. In September 1884, as a member of the Royal Engineers' 8th Railway Corps Company, he was posted to Egypt to take part in the Nile Expedition. While in Sudan, his Company constructed of railway track, from Sarras to Akasha, to facilitate the transport of provisions and stores to and from the fighting front. He returned from Egypt in June 1886. Between January 1889 and February 1894, he served as Inspector of Submarine Defences at Bombay, India, where, on 15 March 1890, he married Ethel Farran Orr, the daughter of a Bombay barrister. He was promoted to Major in May 1890 and to Lieutenant-Colonel in December 1897. He continued to play cricket at club level and in January 1890 he made two appearances for G F Vernon's XI in matches against local sides at the Gymkhana Ground, Bombay. In 1899, Donop left the Royal Engineers to become an Inspecting Officer of Railways for the Board of Trade's Railway Inspectorate. He was promoted to Chief Inspecting Officer in July 1913 and held that position until his retirement in 1916. During his time with the Board of Trade he investigated numerous railway accidents, such as those at Witham, Essex in 1905 and at Ilford, Essex, in 1915, and also carried out safety inspections of tram services, such as that at Warrington, Lancashire. He died on 7 November 1921 and is buried in Mortlake. Donop acted as godfather to the writer P. G. Wodehouse, who was named Pelham in his honour.
