The Battle of Sheikh Sa'ad (Turkish: Sağ Sahil) occurred between 6–8 January 1916 during the Mesopotamian Campaign of the First World War. The battle took place along the banks of the Tigris River between the Anglo-Indian Tigris Corps and elements of the Sixth Army in Ottoman Iraq. The engagement was the first in a series of assaults by the Tigris Corps to try to break through the Ottoman lines to relieve the besieged garrison at Kut.

Background With the entry of Ottoman Empire to the First World War on 31 October 1914, Indian Expeditionary Force D was ordered to secure the Shatt-al-Arab and Basra in order to safeguard the flow of oil from British-owned oilfields in Persia. Following the capture, Force "D"'s mission in Mesopotamia expanded gradually as local commanders saw a chance for victories which would burnish the British Empire's prestige in the Muslim world. At the battles of Qurna, Nasiriyeh, and Es Sinn, Force "D" defeated elements of the Ottoman Sixth Army. After the Battle of Es Sinn, the Anglo-Indian force controlled the Tigris and Euphrates rivers through much of what is now southern Iraq. Sensing that Baghdad was within their gasp, the commander of Force "D", supported by the Commander in Chief, India, in Simla, argued for permission to launch a final offensive to capture it. The situation looked promising. The nearest Ottoman reserves, according to British intelligence, were 400 miles distant in the Caucasus or 250 miles away at Aleppo in Syria. All that blocked the way to Baghdad were two demoralized, defeated divisions.

In London, the India Office was staunchly opposed to any further advance. At this point in the war, the Indian Office, and not the War Office, controlled the operations in Mesopotamia. Secretary of State for India, Austen Chamberlain objected to the proposed advance because of his concern that even if Baghdad could be captured, it would only be lost again because no other troops were available to reinforce Force "D". Eventually, the question of a further advance was taken up by Asquith's War Cabinet. The decision to advance was given.

During the second half of 1915, Force "D" had only one division, the 6th (Poona) Division under Major-General Charles V.F. Townshend, available for offensive operations. Although tactically successful at the Battle of Ctesiphon against the Ottoman Sixth Army, but this proved to be a Pyrrhic victory. The Poona Division retreated to Kut. The Ottoman Sixth Army, now reinforced, followed and laid siege to the Anglo-Indian force at Kut-al-Amarrah.

Situation at the end of December 1915 Situation in Kut The key to whether the Kut garrison would be able to hold out was food. After early attempts to storm the town failed, the Ottoman forces investing Kut opted to starve the defenders into submission. Townshend had ordered some of his forces to break out and regroup downriver where the remnants of I.E.F. "D" were beginning to gather. However, even by decreasing the number of mouths to feed, the food problem was more complex than simply the amount available. As the siege began to drag on, Townshend sent word to Nixon that his food supply would only last until 15 January 1916.Edmund Candler, The Long Road To Baghdad, vol. I (New York: Cassell and Company, Ltd., 1919), p. 42.

The Kut garrison was made up of the 6th (Poona) Division. Unlike a typical British division, or even an Ottoman one, Indian Army divisions had a complex make up. Battalions would be made up of companies from the various Indian ethnic and religious groups.Byron Farwell, Armies of the Raj: From the Great Indian Mutiny to Independence: 1858–1947 (New York: W.W. Norton & Company, 1989), p. 51. Each group had its own dietary requirements. Hindus, for example, would never touch meat from a cow or even allow their food to be cooked in pots which had cooked cow meat. Sikhs, while allowing meat to be eaten, could not eat any animals slaughtered in accordance with a ritual, such as halal. Muslim troops required food prepared in accordance with halal. Finally, there were the British troops, whose diet was decided by Whitehall. Along the North-West Frontier, where Indian Army units traditionally were assigned, the mixed dietary needs were manageable. But in Mesopotamia, at the end of a long and poorly developed supply line, the problem was significantly more difficult. At the start of the siege, in December 1915, Townshend reported he had enough food to feed the sepoys of his division for 54 days.Major E.W.C. Sandes, In Kut and Captivity With the Sixth Indian Division, (London: John Murray, 1920) p. 478

Although Townshend declared that his intent to engage in an active defense of Kut, the reality was completely different. Instead of launching any raids or sorties, Townshend dug his troops in around the town of Kut, and across the river at the village the soldier's nicknamed "Woolpress", and awaited rescue. At the first sign that the pontoon bridge, the primary link between Kut and Woolpress, was threatened by the Ottoman siege lines, Townshend ordered it destroyed. This left Townshend with only a few small launches and the gunboat Sumana to ferry men and supplies across the river.Brig.Gen. F.J. Moberly, History of the Great War Based on Official Documents: The Campaign in Mesopotamia 1914–1918, vol. II (London: His Majesty's Stationery Office, 1923), p. 166.

Collecting the relief force Downriver from Kut, at Ali Gharbi, Lieutenant-General Fenton Aylmer was collecting forces to relieve the Kut garrison. Initially, the only force available in theatre which were not already in Kut was the 6th Indian Cavalry Brigade and the 35th and 28th Indian Brigades. They would soon be joined by the first elements of the 7th (Meerut) Division. With pressure from both Townshend in Kut and Nixon in Basra, Aylmer succumbed to their demands and began his advance upriver as soon as his he had collected three full brigades of infantry. Setting out on 4 January 1916, Aylmer would be able to commit approximately 9,900 infantry, 1340 cavalry, and 42 field guns. Additionally, along the Tigris there would be four gunboats to support the advance.David F. Burg and L. Edward Purcell, Almanac of World War I, part 522 (Lexington, Kentucky: University Press of Kentucky, 2004), p. 94.

Prior to arriving in theater, Meerut Division had briefly refit in Egypt after being withdrawn from France. Although prized by I.E.F. "D" as a veteran formation, the Meerut Division's experienced had come at a high price. As part of Indian Expeditionary Force A, later re-designated as the Indian Corps, the Meerut Division had arrived in France in September 1914, participating in the Battle of La Bassée, Battle of Neuve Chapelle, Battle of Aubers, and Battle of Loos. By December 1915, the division has suffered heavy casualties among the sepoys and their British officers. The Indian Army's reserve system, never fully developed before the war, was overtaxed trying to resupply the division's battalions with fresh, trained sepoys. Even more difficult was the problem of finding replacement officers to command the Indian troops.

Since the Sepoy Mutiny, British policy had been to ensure that senior officers of an Indian Army unit would always be British. Only European Britons could hold positions as company commanders, adjutants, quartermasters, and battalion commanders.Moberly, vol. I, p. 63 However, not any British officer would be effective commanding the Indian troops. It took time to teach language and cultural skills necessary to deal with the various castes, religions, and ethnicities that made up the Indian Army.Farwell, p.250.

Not only was it problematic finding qualified British officers to command the companies and battalions of the Indian Army, there was also a shortage of trained Indians to be granted a Viceroy's Commission. Viceroy Commissioned Officers occupied a unique position between the junior British officers and the senior non-commissioned officers. During its year in France, the VCO's of the Meerut had also suffered heavy casualties. Prior to the war, when most operations of the Indian Army were along the North-West Frontier, there had never been a need to quickly produce VCOs. Consequently, those who were promoted to the rank of VCO was typically a long service soldier of many years of experience.Farwell, p. 30 With the heavy casualties of France, the system had not yet caught up to the realities of the new type of war they were fighting. Confronted with a type of war they had never expected to be a part of, morale among the Indian troops plummeted.Farwell, p. 251. As an added insult, when the Meerut and Lahore Divisions were withdrawn from France, they ceased receiving combat pay, even though they were being shipped Egypt, under threat from Ottoman force, and then to Mesopotamia, to actively take part in an offensive.

Comparatively, the Indian units were even more ill-equipped for modern war than the rest of troops of Britain's empire. Indian divisions had less artillery assigned to it.Farwell, p.249. At the start of the war, an Indian Division had one brigade of artillery, as opposed to the three assigned to a British European division. What artillery that an Indian division did have was typically lighter, more suited for expeditions along the North-West Frontier. Its troops were deliberately kept a generation behind in infantry weaponry. During their time in France, the Indian Corps divisions had been brought up to date with the latest weaponry, including flare guns and bombs. However, when withdrawn from France, most of this equipment was left behind in France for their replacements to use.

To manage the fighting of this ad hoc unit, Aylmer had almost no staff support. His staff for the relief force, designated as Tigris Corps, consisted of one staff officer, one wounded officer, and one brigadier who had failed to finish the Quetta Staff College. In addition to this staff, his collection of brigades would be under the command of the Major-General Sir George Younghusband, GOC of the 7th (Meerut) Division, who was without his staff.Testimony of Lieutenant-General Sir F. J. Aylmer, Mesopotamian Commission, 9 January 1917, p. 852. Just after the new year, Aylmer's ordered his force to move upriver from Ali Gharbi.

Ottoman preparations Upriver waited the Ottoman Sixth Army under the command of Field Marshal Colmar Freiherr von der Goltz. Recalled from retirement to join the military mission to Germany's ally, von der Goltz had been given command of the Ottoman Sixth Army in October 1915. After two attempts to take Kut by storm failed, von der Goltz, over the objections of his senior Ottoman officers, opted to starve the defenders into submission.

By the time the relief force began its advance, von der Goltz's Sixth Army could field two corps of infantry: XIII and XVIII Corps. Because Townshend's intentions were still unknown to the Sixth Army, von der Goltz had to commit a substantial portion of his command to maintaining the siege lines. This was needed to prevent Townshend's troops from attempting a breakout in coordination with Aylmer's offensive. In January 1916, the siege was being maintained by XVIII Corps, under the command of Colonel Kazime Pasha, was composed of the 45th and 51st Infantry Divisions.Kazım Paşa (Karabekir) at Turkey in the First World War