Serving in the Wiltshire Regiment Raikes took up a position as brigadier-general in Zanzibar's army and fought on the pro-British side in the Anglo-Zanzibar War.

Raikes returned the flag to M. Laronce the French consul and, in court with the Arab caid, pronounced a sentence of one years imprisonment on the slaver.

The British consul Arthur Henry Hardinge pronounced that the likelihood was that the slaver was born in Pemba and even if from the Comoros his birth would have preceded the declaration of the French protectorate.

[12] On 26 July 1905 he was given approval to accept and wear the insignia of a Knight Commander of the Order of Christ, awarded to him by King Carlos I of Portugal in return for valuable services.

[13] On 12 July 1906, Raikes was appointed a First Class Member of the Order of El Aliyeh for services rendered to the Sultan of Zanzibar.