The relief expedition was composed of thirty thousand Indian troops, two Anglo-Indian divisions, and the remnants of Townshend’s expedition, a total of about ninety thousand men. General Sir Percy Lake was in command of the entire force. The march began on January 6th. By January 8th the British had reached Sheikh Saad, where the Turks were defeated in two pitched battles. On January 22d he had arrived at Umm-el-Hanna, where the Turks had intrenched themselves.
After artillery bombardment the Turkish positions were attacked, but heavy rains had converted the ground into a sea of mud, rendering rapid movement impossible. The enemy’s fire was heavy and effective, inflicting severe losses, and though every effort was made, the assault failed.
For days the British troops bivouacked in driving rain on soaked and sodden ground. Three times they were called upon to advance over a perfectly flat country, deep in mud, and absolutely devoid of cover against well-constructed and well-planned trenches, manned by a brave and stubborn enemy, approximately their equal in numbers. They showed a spirit of endurance and self-sacrifice of which their country may well be proud.
But the repulse at Hanna did not discourage the British army. It was decided to move up the left bank of the Tigris and attack the Turkish position at the Dujailah redoubt. This meant a night march across the desert with great danger that there would be no water supply and that, unless the enemy was routed, the army would be in great danger.