 He also represented his father on foreign visits, such as for the funeral of King Umberto I of Italy in 1900, the wedding of Crown Prince Wilhelm and Crown Princess Cecilie of Prussia in 1905, and the coronation of King George V and Queen Mary of the United Kingdom in 1911.He and his brother Prince Purachatra, Commander of the Army Engineers, were instrumental in the development of aviation in the Kingdom.Prince Chakrabongse is best remembered today as the father of the army's Royal Aeronautical Service, a forerunner to the Royal Thai Air Force.