The loss of the engines was sore upon the Turks. Since the rolling stock was pooled for Palestine and Hejaz, our destructions not merely made the mass evacuation of Medina impossible, but began to pinch the army about Jerusalem, just as the British threat grew formidable.

Meanwhile Egypt had wired for me. An aeroplane carried me to G.H.Q. , where Allenby by splendour of will was recreating the broken British Army. He asked what our railway efforts meant; or rather if they meant anything beyond the melodramatic advertisement they gave Feisal’s cause.

I explained my hope to leave the line just working, but only just, to Medina; where Fakhri’s corps fed itself at less cost than if in prison at Cairo. The surest way to limit the line without killing it was by attacking trains. The Arabs put into mining a zest absent from their pure demolitions. We could not yet break the line, since railhead was the strongest point of a railway, and we preferred weakness in the nearest enemy neighbour till our regular army was trained and equipped and numerous enough to invest Maan.