In his book Jerusalem: From the Ottomans to the British, Roberto Mazza a note issued by the British Foreign Office’s News Department:
“The attention of the press is again drawn to the undesirability of publishing any article, paragraph of picture suggesting that military operations against Turkey are in any sense a Holy War, a modern Crusade, or have anything whatever to do with religious questions. The British Empire is said to contain a hundred million of Mohammedan subjects of the King and it is obviously mischievous to suggest that our quarrel with Turkey is one between Islam and Christianity.”
[From Not a War Against Islam]