The Battle of Nablus took place, together with the Battle of Sharon during the set piece Battle of Megiddo between 19 and 25 September 1918 in the last months of the Sinai and Palestine campaign of the First World War. Fighting took place in the Judean Hills where the British Empire's XX Corps attacked the Ottoman Empire's Yildirim Army Group's Seventh Army defending their line in front of Nablus. This battle was also fought on the right flank in the Jordan Valley, where Chaytor's Force attacked and captured the Jordan River crossings, before attacking the Fourth Army at Es Salt and Amman capturing many thousands of prisoners and extensive territory. The Battle of Nablus began half a day after the main Battle of Sharon, which was fought on the Mediterranean section of the front line where the XXI Corps attacked the Eighth Army defending the line in front of Tulkarm and Tabsor and the Desert Mounted Corps which rode north to capture the Esdrealon Plain. Together these two battles, known as the Battle of Megiddo, began the Final Offensive of the war in the Sinai and Palestine campaign.Battles Nomenclature Committee 1922 p. 33

By the afternoon of 19 September, it was clear that the breakthrough attacks in the Battle of Sharon by the XXI Corps had been successful, and the XX Corps was ordered to begin the Battle of Nablus by attacking the well-defended Ottoman front line, supported by an artillery barrage. These attacks continued late into the night and throughout the next day, until the early hours of 21 September when the continuing successful flanking attack by the XXI Corps, combined with the XX Corps assault and aerial bombing attacks, forced the Seventh and Eighth Armies to disengage. The Ottoman Seventh Army retreated from the Nablus area down the Wadi el Fara road towards the Jordan River, aiming to cross at the Jisr ed Damieh bridge, leaving a rearguard to defend Nablus. The town was captured by the XX Corps and the 5th Light Horse Brigade, while devastating aerial bombing of the Wadi el Fara road, blocked that line of retreat. As all objectives had now been won, no further attacks were required of the XX Corps, which captured thousands of prisoners in the area and at Nablus and Balata.

Defending the right flank and subsidiary to the Nablus battle, the Third Transjordan attack began on 22 September when Meldrum's Force, a section of Chaytor's Force captured the 53rd Ottoman Division on the Wadi el Fara road, running from Nablus to the bridge at Jisr ed Damieh over the Jordan River. Further sections of the retreating Seventh Army column were attacked and captured, during the subsequent battle for the bridge when several fords were also captured along with the bridge, cutting this main Ottoman line of retreat eastwards. As the Fourth Army began its retreat, Chaytor's Force supported by reconnaissance and attacking aircraft, advanced from Jisr ed Damieh to the east to capture Es Salt on 23 September. This force continued its advance eastwards, to capture Amman on 25 September, after a strong Fourth Army rearguard was defeated there. The southern Hedjaz section of the Fourth Army was captured to the south of Amman, at Ziza on 29 September, ending military operations in the area.

Following the victory at Megiddo, the Final Offensive continued when Damascus was captured on 1 October, after several days of pursuit by the Desert Mounted Corps. A further pursuit resulted in the occupation of Homs. On 26 October, the attack at Haritan, north of Aleppo, was under-way when the Armistice of Mudros was signed between the Allies and the Ottoman Empire, ending the Sinai and Palestine campaign.

Background

After the Ottoman Army's defeat at the Battle of Beersheba, the loss to the Central Powers of southern Palestine, the retreat to the Judean Hills and the loss of Jerusalem at the end of 1917, several Ottoman army commanders in Palestine were replaced. The Yildirim Army Group's German commander, General Erich von Falkenhayn, was replaced by the German General Otto Liman von Sanders. The commander of the Eighth Army, Kress von Kressenstein, was replaced by Djevad Pasha and Cemal commander of the Ottoman Army, appointed Cemal Kucjuk Pasha to command the Fourth Army.Kinloch 2007 p. 303 Mustafa Kemal had resigned as commander of the Seventh Army in 1917 but was back by early September 1918.Falls 1930 Vol. 2 p. 674

Following the Treaty of Brest-Litovsk in March 1918, which ended the war on the Eastern Front between Imperial Russia and Imperial Germany, the main focus of the Ottoman Army turned to the Anatolian provinces and territories lost in 1877–1878 during the Russo-Turkish War.Bruce 2002 pp. 207–8 The Ottoman Army embarked on a series of territorial conquests in the Caucasus beginning in northern Persia. Erzerum which had been captured by the Russians in 1916, was retaken on 24 March 1918, followed by Van on 5 April and later Batum, Kars and Tiflis. Reoccupation of these former possessions brought little strategic advantage to the Ottoman Empire, compared with the potential benefits of military success in Palestine.

Major offensive operations in Palestine also became a low priority for the British Army in March; being postponed because of the German spring offensive in France, but by July, it was clear that the German offensive had failed resulting in a return to the battle of attrition in the trenches. This coincided with the approach of the campaign season in Palestine.Woodward 2006 p. 190Bruce 2002 p. 207 General Edmund Allenby, commander of the Egyptian Expeditionary Force (EEF) was "very anxious to make a move in September" when he expected to capture Tulkarm and Nablus, the headquarters of the Seventh and Eighth Armies, along with the road to Jisr ed Damieh and Es Salt. "Another reason for moving to this line is that it will encourage both my own new Indian troops and my Arab Allies."Allenby letter to Wilson 24 July 1918 in Hughes 2004 pp. 168–9

Reorganisation of EEF infantry

To replace British losses suffered during the Spring Offensive the 52nd (Lowland), the 74th (Yeomanry) Divisions and nine British infantry battalions from each of the 10th, 53rd, 60th and the 75th Divisions were sent to France between April and August 1918. The resulting vacancies in the divisions were filled by British Indian Army battalions.Wavell 1968 p. 183Cutlack 1941 p. 121Gullett 1941 pp. 653–4Falls 1930 Vol. 2 p. 350 The 75th Division had received the first Indian battalions in June 1917.The divisions 232nd and 233rd Brigades were formed in April and May 1917 from four British battalions. The 234th Brigade only had two British battalions until two Indian battalions joined in July and September 1917. when it was formed. [75th Division, The Long Long Trail] Other sources claim on establishment the 75th Division was made up of Territorial and Indian battalions. [Falls 1930 Vol. 1 p. 319] Infantry brigades were now reorganised with one British battalion and three Indian battalions.Falls 1930 Vol. 2 pp. 662–5, 668–671 Except one brigade in the 53rd Division which had one South African and three Indian battalions. The British Indian Army's 7th (Meerut) Division arrived from the campaign in Mesopotamia in January 1918 followed by the 3rd (Lahore) Division in April 1918.Woodward 2006, p. 170Perrett, pp.24–26Falls 1930 Vol. 2 pp. 413, 417Allenby had been informed after the capture of Jerusalem in December 1917 that "the 7th Indian Division would arrive from Mesopotamia" and on 1 April it relieved the 52nd Division which sailed for France, the "3rd Indian Division" arrived from Mesopotamia on 14 April 1918. [Falls 1930 Vol. 2 pp. 293, 350, 413] Only the 54th (East Anglian) Division remained, as previously, an all British division.Falls 1930 Vol. 2 pp. 670–1

By April 1918, 35 infantry and two pioneer battalions were being prepared to move to Palestine.Roy 2011, pp.170–171 Some of these battalions, numbered from 150 upwards, were formed by removing complete companies from experienced regiments then serving in Mesopotamia and forming new battalions. The 2/151st Indian Infantry, was one such battalion formed from one company each from the 56th Punjabi Rifles, the 51st, 52nd and 53rd Sikhs. One regiment the 101st Grenadiers formed a second battalion by dividing itself into two with two experienced and two new companies in each battalion. The parent battalions also supplied first line transport and experienced officers with war time service. The 3/151st Indian Infantry, had the commanding officer, two other British and four Indian officers included in the 198 men transferred from the 38th Dogras. The sepoys transferred were also very experienced, in September 1918 the 2/151st Indian Infantry had to provide an honour guard for Allenby, among the men on parade, were some who had served on five different fronts since 1914, and on eight pre war campaigns.Roy 2011, p. 174

Of the 54 Indian battalions deployed to Palestine, 22 had recent experience of combat, but had each lost an experienced company, which had been replaced by recruits. Ten battalions were formed from experienced troops who had never fought or trained together. The other 22 had not seen any prior service in the war, in total almost a third of the troops were recruits.Erickson, p. 126 Within 44 Indian battalions, the "junior British officers were green, and most could not speak Hindustani. In one battalion only one Indian officer spoke English and only two British officers could communicate with their men."Woodward 2006 p. 182 Not all of the Indian battalions served in the infantry divisions, some were employed in defence of the lines of communication.Roy 2011, p. 170

Front line In September 1918, the front line began near sea level on the Mediterranean coast about north of Jaffa and Arsuf, extending about south-eastward across the Plain of Sharon, then eastward over the Judean Hills for about , rising to above sea level along the way. From the Judean Hills, the front line dropped down to below sea level, to cross the Jordan Valley for approximately , ending in the foothills of the Mountains of Gilead/Moab.Gullett 1919 pp. 25–6Wavell 1968 p. 205

Railway

The Ottoman railway from Istanbul travelled south to Deraa where it branched into two lines. One line continued east of the Jordan River in a southerly direction to supply the Ottoman Fourth Army headquarters and the garrisons and forces scattered along the southern Hedjaz railway several hundred miles to the south. The second railway line turned westward to supply the Ottoman Seventh and the Eighth Armies in the Judean Hills. This second line crossed the Jordan at Jisr Mejamie, ran southwards down the west bank of the Jordan River to Beisan, then turned westward to run parallel to the front line in the Judean Hills, across the Esdraelon Plain to Afulah. From Afulah the railway forked again into two lines: a branch line running north-westerly to Haifa, while the main line turned south to Jenin. From Jenin the railway wound through a narrow pass in the foothills to climb to Messudieh Junction in the Judean Hills where it again branched into two lines. One line ran westward to Tulkarm and the Eighth Army headquarters before turning south to reach railhead behind the Eighth Army' front line on the coastal plain, while the second line continued south-eastward to Nablus. Here, the headquarters of the Seventh Army was located, north of Jerusalem on the main road to Nazareth and Damascus.Keogh 1955 pp. 243–4

Prelude