On 1 March, aircraft of No. 1 Squadron
AFC reconnoitred El Kutrani and reported a camp of 150 tents, 14 large dumps, 150 rolling stock including three trains and seven gun positions south-west of the station. Nearby a new aerodrome with six hangars and a number of tents had two large two-seat aircraft on the ground. A combined Australian and British air raid on 4 March by Nos 1 and
142 Squadrons dropped 45 bombs on this aerodrome without much success. During the period the whole area on the Jordan front and the Amman position, including all camps and defence positions, was reconnoitred and mapped. At Shunet Nimrina a considerably increased Ottoman presence was noted on 3 March and successfully bombed on 6 March. The establishment of a bridgehead on the east bank of the Jordan River and the advance to Es Salt and Amman was to be preceded by diversionary attacks across the entire front and coordinated with an Arab raid led by T. E. Lawrence on the Deraa Hejaz railway station. The aim of these attacks was to destroy or damage a long
viaduct known as the
Ten Arches Bridge and tunnel near Amman on one of the Ottoman Empire's strategically important
lines of communication – the
Hejaz Railway. This rail line ran from Damascus southwards through eastern Syria east of Jerusalem all the way to Medina. By destroying the tunnel and viaduct which would be difficult to repair, the rail line could be cut for a considerable period of time and the Ottoman forces to the south would be isolated. Ottoman Army pressure on the Arab forces operating in the Ma'an area would be reduced and Allenby hoped Shea's attack would encourage the recall of a large Ottoman force which had occupied Tafila in March. Despite the extended front Shea's force would be operating on far from reinforcements, resistance to the attack was expected to be light.
Ottoman forces The headquarters of the Ottoman
Fourth,
Seventh and
Eighth Armies' were located at Amman east of the Jordan River, and at Nablus and Tulkarm in the Judean Hills, respectively, while their commander in chief's headquarters was at Nazareth. About 4,000 to 5,000 German and Ottoman soldiers with rifles, a large number of machine guns and 15 guns defended fortified positions covering the railway viaduct and tunnel in the Amman area while another 2,000 Ottoman soldiers defended the region towards Es Salt. The force defending Shunet Nimrin, Es Salt and Amman, commanded by Lieutenant Colonel Asim, included the 3rd Assault Company with three infantry battalions, the German 703rd Infantry Battalion with some machine gun, cavalry and artillery units. These assault battalions which consisted of between 300 and 350 officers and men were well equipped. They were frequently used in counterattacks and as divisional and corps reserves. The 3rd Assault Company was formed from a divisional detachment in late February 1918. Defending Amman on 27 March the Ottoman and German garrison consisted of 2,150 rifles, 70 machine guns and ten guns. Jemal Kuchuk commander of the Fourth Army, arrived on 28 March to take command of the defence of Amman. Up to 30 March, approximately 2,000 reinforcements arrived with more to follow. In reserve at the Amman railway station were the 46th Assault Company from the infantry's 46th Division. German and Ottoman squadrons of aircraft in the area included single-seater
Albatros D.V.a
scouts and
AEG two-seaters,
Rumplers (260-h.p. Mercedes),
LVGs (260-h.p. Benz) and
Halberstadts all with similar flying-speeds to the British
Bristol F.2 Fighters.
Shea's force Shea's force consisted of the 60th (London) Division, the
Anzac Mounted Division (Australian and New Zealand Mounted Division), the
Imperial Camel Corps Brigade including their assigned
artillery battery the Hong Kong and Singapore Mountain Battery, with four
BL 2.75 inch Mountain Guns, (firing 12-pounder shells) the 10th Heavy Battery
Royal Garrison Artillery (RGA), a Light Armoured Car Brigade, the Army Bridging Train, Desert Mounted Corps Bridging Train and pontoon units. On several occasions during the concentration of Shea's force before the attack, German and Ottoman aircraft had bombed their camps while British Empire aircraft had been absent. During these operations the remainder of the Egyptian Expeditionary Force continued to hold the front line, garrison the captured territories and supply the troops.
Supplies The attacking forces lines of communication began at the Jerusalem railway station where supplies were offloaded on to lorries and driven to Jericho and later to the Jordan River away. The divisional trains of horse-drawn or mule-drawn wagons transported to Shunet Nimrin and Es Salt. Three echelons 550 camels of the Egyptian Camel Transport Corps were employed to supply the Anzac Mounted Division; one worked between Shunet Nimrin and Es Salt while the other two alternated carried one day's supplies to Amman. Two echelons of 805 camels each alternated to carry one day's supplies for the 60th (London) Division between Shunet Nimrin and Es Salt. A dump was established with five days reserve supply at Junction Dump east of Talaat ed Dumm along with a reserve of camels.
Passage of the Jordan 21–23 March Two possible crossing places were identified by the
Auckland Mounted Rifles Regiment during the month they patrolled the Jordan Valley after the capture of Jericho. These were at Ghoraniyeh and at Makhadet Hajlah (also known as Joshua's Crossing and the site of the baptism of Christ); these crossings were thought to be the only places bridges could be constructed at the time of year. Several days of heavy rain caused the river to rise and become many feet deep, filling from bank to bank in a swiftly flowing torrent with strong currents. Lieutenant General
Philip Chetwode, commander of XX Corps, expressed his concerns regarding the state of the Jordan River in a letter to Allenby on 18 March 1918, when he described the heavy rain and the resulting rise in the river's height and his concerns that these may threaten the viability of Transjordan operations. The unusually heavy March rains caused the Jordan River to flood forcing a postponement of operations for two days during which the weather improved slightly and the river dropped back to within its banks.
21 March While the Anzac Mounted Division concentrated in the Talaat ed Dumm area the Imperial Camel Corps Brigade arrived in the area from Bethlehem and the 60th (London) was near the Wadi Nueiame at Ghoraniyeh with one battalion in the Wadi Kelt further south at Makhadet Hijla. The 53rd Division garrisoned the Wadi el Auja. Shea planned to put three bridges across at Ghoraniyeh; a standard pontoon, a barrel pier and a footbridge and at Makhadet Hijla a cavalry steel pontoon bridge. The 180th Brigade was to force both crossings before advancing up the road to the foothills. The 179th Brigade was to move up the Wadi Abu Turra track on the left of the 180th Brigade while the 181st Brigade remained in reserve at Ghoraniyeh bridgehead. The mounted troops were to cross at Makhadet Hijla. Two swimmers were lost and at Ghoraniyeh and the 2/17th Battalion, London Regiment suffered severe casualties trying to get a line across the river. Later, repeated unsuccessful attempts were made to cross the river in punts and rafts. Many were drowned when Asim's German and Ottoman defenders opened fire on barges made of wood and tarpaulins stretched over framework which became waterlogged after being holed by gunfire.
Bridgehead established By 07:45 the whole of the 2/19th Battalion London Regiment was across the Jordan River. The 2/18th Battalion London Regiment was across the Jordan by 10:00 using the cavalry pontoon bridge which the Anzac Mounted Division's field squadron had completed at 08:10 the remaining battalions of the 180th Brigade reached the right bank at Makhadet Hijla by about 13:30. Chetwode and H.R.H. the Duke of Connaught complimented the brigade on the passage. By nightfall on 22 March an infantry battalion had crossed the Jordan River and established a bridgehead on the eastern bank. Despite being hampered by dense jungle and Ottoman machine gun fire during the day together with artillery which bombarded the slopes, an infantry brigade crossed the river and during the night the bridgehead was pushed out. The 181st Brigade was ordered to make another attempt to cross the Jordan River at Ghoraniyeh during the night of 22/23 March which failed. At 04:00 on 23 March the Auckland Mounted Rifles Regiment attached to the 180th Brigade, began to cross the river at Makhadet Hajlah. Two squadrons pushed Ottoman units back out of the country on the eastern bank as far north as Ghoraniyeh while one squadron was sent eastwards. This squadron, armed with their .303 rifles and bayonets, charged into the Ottoman cavalry and overran it. Lieutenant K. J. Tait and his lead troop of 20 men intercepted 60 sabre-carrying Ottoman cavalry on a track near Qabr Mujahid. Remaining mounted the New Zealanders galloped and shot as many as 20 Ottoman soldiers capturing 7 prisoners. Tait was killed in a hand to hand duel with the Ottoman cavalry officer. Meanwhile, the two squadrons which rode north towards Ghoraniyeh were not stopped by any of the Ottoman posts they attacked, before they reached the main road. Here they encountered a strongly held position; here the Ottoman infantry stood their ground while a troop of the Auckland Mounted Rifles Regiment's 3rd Squadron galloped into them capturing a machine gun and turning it on the escaping Ottoman soldiers.
Shea's force crosses the Jordan At Makhadet Hajlah mounted rifle, light horse and camels crossed by a pontoon bridge; a second was also constructed, while at Ghoraniyeh, a footbridge was constructed by 16:30 on 23 March, by which time the
2/21st Battalion London Regiment had crossed by rafts. A pontoon bridge and a heavy barrel-pier bridge were built by 21:30 providing altogether five bridges across the Jordan River. The 303rd Brigade R.F.A. crossed by the pontoon bridge at Ghorniyeh. At midnight the Anzac Mounted Division was concentrated near Kasr Hajlah; and at 01:00 on the morning of 24 March, the
1st Light Horse Brigade began to cross the Jordan River by the pontoon bridge at Makhadet Hajlah. The New Zealand Mounted Rifles Brigade followed to join the
Auckland Mounted Rifle Regiment and by 05:00 the leading brigade of Shea's force was along the Es Salt road moving to the east of Hajlah, and the three infantry brigades of the 60th (London) Division were between Ghoraniyeh and Shunet Nimrin, the latter dominated by the hill of El Haud. In a telegram to the War Office of 25 March 1918, Allenby reported to the War Office, "Three bridges were thrown across Jordan during the night of 23rd–24th March, and by 8 a.m, LXth Division [60th Division], Anzac Division and Imperial Camel Corps Brigade were east of the river."
Light horse defend the northern flank in the Jordan Valley The Anzac Mounted Division was split into three; divisional headquarters with the 2nd Light Horse Brigade and the Imperial Camel Corps Brigade advanced straight towards Amman by the Na'ur track, the New Zealand Mounted Rifles Brigade with the Auckland Mounted Rifles Regiment reattached advanced along the Ain es Sir track, while the 1st and 2nd Light Horse Regiments of the 1st Light Horse Brigade took up a position with its left on the Jordan River near Umm esh Shert to cover the northern flank of the advance while the 3rd Light Horse Regiment advanced up the Umm esh Shert track towards Es Salt. Moving up the eastern bank of the river to the north of the infantry, the 1st Light Horse Brigade got about north of the El Mandesi ford; halfway between the Ghoraniyeh crossing and Umm esh Shert.
Occupation of Es Salt 24–25 March Es Salt, was north east from the Ghoraniyeh crossing of the Jordan River and above the Jordan River. Before the war the city had a population of between 10,000 and 15,000 Arab, Christian, Ottoman and Cicassians living in stone buildings half of whom were Christian. At Tell el Mistah the 2/22nd Battalion London Regiment captured three guns while the 181st Brigade with a squadron of the Wellington Mounted Rifle Regiment attached captured the bridge across the Wadi Shu'eib at Huweij south of Es Salt, but was forced to halt when darkness ended operations for the day. By nightfall on 24 March infantry from the 60th (London) Division with the 6th Squadron,
Wellington Mounted Rifles Regiment attached, was beyond Shunet Nimrin, marching up the motor road from Ghoraniyeh bridge to Es Salt. From Shunet Nimrin the road winds along the side of the desolate hills bordering the Wady Shaib to begin an climb in a north easterly direction towards Es Salt above sea level. Aircraft which included an Australian Martinsyde, had bombed Shunet Nimrin ahead of the infantry attack. The 6th Squadron of the Wellington Mounted Rifles Regiment (New Zealand Mounted Rifles Brigade) remained with the infantry to garrison and defend the town.
Trek to Amman Amman, which is a further to the east southeast across the plateau from Es Salt is above sea level, higher than Es Salt. it clearly shows the Naaur and Ain es Sir tracks to Amman The divisional headquarters of the Anzac Mounted Division together with the 2nd Light Horse Brigade and the Imperial Camel Corps Brigade marched towards Amman on the number three road, a track well to the south of the main road which passed through the village of Naaur some to the south of Shunet Nimrin. As the road to Naaur dwindled away to a track all wheels had to be left behind including most of the reserve small arms ammunition (SAA). Only four small pack mountain guns, a little reserve ammunition (two boxes of SAA to a camel) and the explosives required to demolish the viaduct and tunnels, were put on camels and pack-horses to make the trek forward. Meanwhile, the New Zealand Mounted Rifles Brigade took a path half a mile beyond Shunet Nimrin towards Rujm el Oshir, along the
Wadi es Sir through Ain es Sir direct to Amman.
Anzac Mounted Division at Ain es Sir After a second night's march in the cold and wet conditions moving over both bog and rock, the Anzac Mounted Division concentrated at Ain es Sir on the early morning of 26 March west of Amman. The weather was atrocious; sleet and heavy rain continued for almost the entire operation making the roads and tracks soft and boggy and all supplies of rations and forage had to be sent up to the advancing troops on camels and pack-horses. By this stage the advance had been on the march continuously for three days and nights and owing to the exhaustion of the men and horses, Chaytor, commander of the mounted division, postponed the attack on Amman until the next morning. During the day a patrol of six German infantry was captured, another German approaching the lines was shot and a cavalry patrol of three men were "accounted for." As soon as it was dark a special patrol of a troop of the Wellington Mounted Rifles Regiment set out to cut the railway line to the south of Amman. They rode there and back in darkness and pouring rain, successfully blowing up a section of railway line south of Amman. A similar group from the 2nd Light Horse Brigade attempted to wreck the line north of Amman but was unsuccessful although a two-arched bridge on the railway north of Amman was destroyed. ==Battle for Amman 27–30 March==