On April 12th, a three days’ battle opened at Shaiba with an attack by a motley army of 22,000 Turks, Kurds, and Arabs commanded by German officers. During the thick of the fighting, and when success was well within their grasp, the Turkish forces ceased firing and fled in wild panic from field.

A Turkish prisoner subsequently explained the cause of the Turkish withdrawal. It appears that a pack train, approaching the British line from the rear, had been so distorted by a mirage that it appeared to the Turks as a great body of reinforcements. Believing themselves to be fighting against enormous odds, they had yielded up a victory almost won.

– William C. King, King’s Complete History of the World War, 1922