In 1917 the Arab Revolt enjoyed great success. British and Arab troops captured the port of Wejh and they carried out an effective campaign of sabotage against the Hejaz railway, which the Turks were using to supply their campaign against the Allies in Palestine.
In July they took the port of Aqaba and Lawrence of Arabia was promoted from Captain to Major.
Despite the success of the Arab Revolt, Lawrence started to feel very guilty. He built up a good friendship with the Arab people but knew that Britain probably wouldn't give them the independence they had been promised at the end of the war.
A letter home from a Barmouth soldier describing living conditions in the desert of Arabia:
A railway raiding party in the Hejaz region of Arabia. Sabotaging the railway made it difficult for the Turks to transport supplies.