 He was trapped for the duration in the Siege of Ladysmith and participated in the relief of Mafeking.With the death of his brother Cecil in 1902, Frank took possession of Dalham Hall, and erected a hall in the village in Cecil's memory.After retiring from the Army in 1903, he served as managing director of the African Trans-Continental Telegraph Company until his death in 1905 in Groote Schuur, Cape Colony.