Affair of Katia
Encyclopedia
The Battle of Katia was an engagement fought east of the Suez Canal
Suez Canal
The Suez Canal , also known by the nickname "The Highway to India", is an artificial sea-level waterway in Egypt, connecting the Mediterranean Sea and the Red Sea. Opened in November 1869 after 10 years of construction work, it allows water transportation between Europe and Asia without navigation...

 and north of El Ferdan Station
El Ferdan Railway Bridge
The El Ferdan Railway Bridge is a swing bridge that spans the Suez Canal near Ismailia, Egypt. It is the longest swing bridge in the world, with a span of 1100 ft...

, in the vicinity of Katia
Katia
Katia is a feminine given name. It is a variant of Katya. Katia may refer to the following people:In music:*Katia and Marielle Labèque, famous piano duo*Katia Ricciarelli, Italian sopranoIn modelling:*Katia Corriveau, Canadian model...

 and Oghratina, on 23 April 1916 during the Defence of the Suez Canal Campaign
Sinai and Palestine Campaign
The Sinai and Palestine Campaigns took place in the Middle Eastern Theatre of World War I. A series of battles were fought between British Empire, German Empire and Ottoman Empire forces from 26 January 1915 to 31 October 1918, when the Armistice of Mudros was signed between the Ottoman Empire and...

 of World War I
World War I
World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

. An Ottoman
Ottoman Empire
The Ottoman EmpireIt was usually referred to as the "Ottoman Empire", the "Turkish Empire", the "Ottoman Caliphate" or more commonly "Turkey" by its contemporaries...

 force led by the German
German Empire
The German Empire refers to Germany during the "Second Reich" period from the unification of Germany and proclamation of Wilhelm I as German Emperor on 18 January 1871, to 1918, when it became a federal republic after defeat in World War I and the abdication of the Emperor, Wilhelm II.The German...

 general Friedrich Freiherr Kress von Kressenstein made a surprise attack on the British
British Empire
The British Empire comprised the dominions, colonies, protectorates, mandates and other territories ruled or administered by the United Kingdom. It originated with the overseas colonies and trading posts established by England in the late 16th and early 17th centuries. At its height, it was the...

 5th Mounted Yeomanry Brigade, which was widely scattered to the east of Romani. The mounted brigade had been ordered to the area to protect the new railway and water pipeline being built from Kantara on the Suez Canal
Suez Canal
The Suez Canal , also known by the nickname "The Highway to India", is an artificial sea-level waterway in Egypt, connecting the Mediterranean Sea and the Red Sea. Opened in November 1869 after 10 years of construction work, it allows water transportation between Europe and Asia without navigation...

, as this infrastructure extended out past the Canal's zone of defences into the Sinai Peninsula
Sinai Peninsula
The Sinai Peninsula or Sinai is a triangular peninsula in Egypt about in area. It is situated between the Mediterranean Sea to the north, and the Red Sea to the south, and is the only part of Egyptian territory located in Asia as opposed to Africa, effectively serving as a land bridge between two...

 towards Romani. Von Kressenstein's attack was completely successful, wiping out the equivalent of a regiment
Regiment
A regiment is a major tactical military unit, composed of variable numbers of batteries, squadrons or battalions, commanded by a colonel or lieutenant colonel...

. On the same day, an associated Ottoman attack on Duidar, very close to the Suez Canal, failed when it met with strong British opposition.

Von Kressenstein's force had been active in the area since the First Suez Offensive of early 1915, when three columns attacked the Canal along the northern, central, and southern routes across the Sinai Peninsula
Sinai Peninsula
The Sinai Peninsula or Sinai is a triangular peninsula in Egypt about in area. It is situated between the Mediterranean Sea to the north, and the Red Sea to the south, and is the only part of Egyptian territory located in Asia as opposed to Africa, effectively serving as a land bridge between two...

. The growing British strength made attacks on the Suez Canal difficult, and ended the dominance of the Ottoman force in the area. The Ottoman Empire's attacks on 23 April demonstrated their intention to continue opposing the British in the region.

However, the British reaction to these attacks was to double the strength of their forces. The ANZAC Mounted Division
Anzac Mounted Division
The ANZAC Mounted Division was a mounted infantry and mounted rifles division formed in March 1916 in Egypt during World War I following the Battle of Gallipoli when the Australian and New Zealand regiments returned from fighting dismounted as infantry...

's 5th Light Horse Regiment (2nd Light Horse Brigade
2nd Light Horse Brigade
The 2nd Light Horse Brigade was a mounted infantry brigade of the First Australian Imperial Force which served in the Middle Eastern theatre of World War I. The brigade first saw action during the Dardanelles Campaign in the Battle of Gallipoli. After being withdrawn to Egypt in February 1916 they...

), followed by the rest of their brigade and the New Zealand Mounted Rifles Brigade
New Zealand Mounted Rifles Brigade
The New Zealand Mounted Rifles Brigade, consisting usually of four units of mounted infantry, fought in World War I and World War II. Initially a milita, under the instruction of Lieutenant Colonel Joseph Henry Banks they formed the core of the New Zealand Army following successful service in the...

, were all sent to Katia and Romani and established a strong British Empire presence over this contested ground. Soon after, the 1st Light Horse Brigade
1st Light Horse Brigade
The 1st Light Horse Brigade was a mounted infantry brigade of the First Australian Imperial Force which served in the Middle Eastern theatre of World War I. The brigade first saw action during the Dardanelles Campaign in the Battle of Gallipoli. After being withdrawn to Egypt in February 1916 they...

 was also sent forward, and the 52nd (Lowland) Division arrived at Romani not long after. At the beginning of August, the Battle of Romani
Battle of Romani
The Battle of Romani was fought east of the Suez Canal, near the Egyptian town of Romani and the site of ancient Pelusium on the Sinai Peninsula during the First World War...

 was fought over much of the same ground as the Affair of Katia.

Background

In 1915, Sir Archibald Murray
Archibald Murray
General Sir Archibald James Murray, GCMG, KCB, CVO, DSO was a British Army officer during World War I, most famous for his commanding the Egyptian Expeditionary Force from 1916 to 1917.-Army career:...

, the British Commander in Chief of Egypt, partially addressed the threat of von Kressenstein's forces to the Suez Canal
Suez Canal
The Suez Canal , also known by the nickname "The Highway to India", is an artificial sea-level waterway in Egypt, connecting the Mediterranean Sea and the Red Sea. Opened in November 1869 after 10 years of construction work, it allows water transportation between Europe and Asia without navigation...

 by organising the defences into three sectors. No. 1 (Southern) sector, with its headquarters at Suez
Suez
Suez is a seaport city in north-eastern Egypt, located on the north coast of the Gulf of Suez , near the southern terminus of the Suez Canal, having the same boundaries as Suez governorate. It has three harbors, Adabya, Ain Sokhna and Port Tawfiq, and extensive port facilities...

, covered the area from Suez to Kabrit, No. 2 (Central) sector, with its headquarters at Ismailia
Ismaïlia
-Notable natives:*Osman Ahmed Osman, a famous and influential Egyptian engineer, contractor, entrepreneur, and politician, was born in this town on 6 April 1917....

, covered the area from Kabrit to Ferdan, and No. 3 (Northern) sector, with its headquarters at Port Said
Port Said
Port Said is a city that lies in north east Egypt extending about 30 km along the coast of the Mediterranean Sea, north of the Suez Canal, with an approximate population of 603,787...

, covered the area from Ferdan to Port Said. The No. 3 sector also had an advanced headquarters at Kantara. To support these forward defences, the British improved their lines of communication
Lines of Communication
"Lines of Communication" is an episode from the fourth season of the science-fiction television series Babylon 5.-Synopsis:Franklin and Marcus attempt to persuade the Mars resistance to assist Sheridan in opposing President Clark...

 by doubling the single railway line that ran from Cairo
Cairo
Cairo , is the capital of Egypt and the largest city in the Arab world and Africa, and the 16th largest metropolitan area in the world. Nicknamed "The City of a Thousand Minarets" for its preponderance of Islamic architecture, Cairo has long been a centre of the region's political and cultural life...

 to the Suez Canal, and also pumped water from the Nile River along the Sweet Water Canal
Sweet Water Canal
The Sweet Water Canal is a modern canal of Egypt, running along the northern periphery of the now dry distributary of the Wadi Tumilat and extending from Port Said in the north all the way to Suez in the south....

 to supply the troops and the towns on the Suez Canal.The towns on the Suez Canal are Port Said at the Mediterranean Sea end in the north, Ismailia near the Bitter Lakes approximately half way along the canal, and Suez on the Red Sea
Red Sea
The Red Sea is a seawater inlet of the Indian Ocean, lying between Africa and Asia. The connection to the ocean is in the south through the Bab el Mandeb strait and the Gulf of Aden. In the north, there is the Sinai Peninsula, the Gulf of Aqaba, and the Gulf of Suez...

 at the southern end of the canal.

After the conclusion of the Gallipoli Campaign, both sides had large numbers of troops available for redeployment, and the British decided to move their Suez Canal defences from positions on the canal (where they had been during the First Suez Offensive) eastwards into the Sinai desert. Murray aimed to extend the railway and water pipeline to Katia, so that a permanent forward British base of 50,000 men could be established. In February 1916, he requested permission from the War Office
War Office
The War Office was a department of the British Government, responsible for the administration of the British Army between the 17th century and 1964, when its functions were transferred to the Ministry of Defence...

 in London to extend this infrastructure further across the Sinai to El Arish. He considered that such an advance along the northern route, combined with the destruction of the central route's water sources and regular patrols from a base at El Arish, would permanently secure the Suez Canal. An advance to Katia was agreed by the War Office, but no decision was made regarding an advance to El Arish.

The first shipload of rails and sleepers arrived at Kantara on 10 March and, four weeks later, 16 miles (25.7 km) of track stretching towards Katia had been laid by the Egyptian Labour Corps
Egyptian Labour Corps
The Egyptian Labour Corps was a group of Egyptian labourers who worked for the British Army in Egypt during the First World War's Sinai and Palestine Campaign.-Historical context:...

 and Royal Engineers
Royal Engineers
The Corps of Royal Engineers, usually just called the Royal Engineers , and commonly known as the Sappers, is one of the corps of the British Army....

. There were also two new appointments: Brigadier General
Brigadier (United Kingdom)
Brigadier is a senior rank in the British Army and the Royal Marines.Brigadier is the superior rank to Colonel, but subordinate to Major-General....

 E. A. Wiggin took command of the Katia district on 6 April and, three days later, Major General H. A. Lawrence became responsible for No. 3 Sector of the canal defences, which covered the northern section.

Meanwhile, several raids were undertaken by the Australian Light Horse and the Bikaner Camel Corps
Bikaner Camel Corps
The Bikaner Camel Corps was a unit of Imperial Service Troops from India that fought for the allies in World War I and World War II.The Corps was founded by Maharaja Ganga Singh of the Indian state of Bikaner, as the Ganga Risala after the British government of India accepted his offer to raise a...

, accompanied by the Egyptian Camel Transport Corps
Egyptian Camel Transport Corps
The Egyptian Camel Transport Corps were a group of Egyptian camel drivers who supported the British Army in Egypt during the First World War's Sinai and Palestine Campaign...

 carrying supplies, rations and ammunition. The purpose of these raids was to destroy water sources on the central inland route, which had been used by the Ottomans during the First Suez Offensive in late January and early February 1915.

To provide forward protection for the railway construction workers and the infrastructure, the 5th Mounted Brigade was ordered to move to Katia. By early April, however, signs of renewed Ottoman activity in the area were detected and, as a result, the 5th Light Horse Regiment was ordered to reinforce the 5th Mounted Brigade; it was due to arrive at Katia on 24 April.

Ottoman forces

Von Kressenstein moved to challenge the growing British presence with a force of 95 officers 3,560 other ranks comprising 1st and 2nd Battalions and one company of the 3rd Battalion, 32nd Regiment, four or six companies (a regiment) of Arab irregulars
Irregular military
Irregular military refers to any non-standard military. Being defined by exclusion, there is significant variance in what comes under the term. It can refer to the type of military organization, or to the type of tactics used....

 on camels, and six mountain gun
Mountain gun
Mountain guns are artillery pieces designed for use in mountain warfare and areas where usual wheeled transport is not possible. They are similar to infantry support guns, and are generally capable of being broken down into smaller loads .Due to their ability to be broken down into smaller...

s comprising a 75-mm battery of the 8th F. A. Regiment and two guns of the 9th (one and a half batteries), two field ambulances and an ammunition column.These were four gun artillery batteries.[Erickson 2001, p. 155]

The Ottoman and Arab force travelled across the Sinai Peninsula on the northern route, which runs not far from the coast of the Mediterranean Sea
Mediterranean Sea
The Mediterranean Sea is a sea connected to the Atlantic Ocean surrounded by the Mediterranean region and almost completely enclosed by land: on the north by Anatolia and Europe, on the south by North Africa, and on the east by the Levant...

 and nearly parallel with it. A series of oases
Oasis
In geography, an oasis or cienega is an isolated area of vegetation in a desert, typically surrounding a spring or similar water source...

 with date palms and reliable water stretch for 15 miles (24.1 km) from Bir el Abd in the east to Oghratina, Katia and Romani near the Suez Canal. These oases make the northern route from the Ottoman-Egyptian Frontier at Rafa to El Arish and Romani viable, and British strategists thought it possible that 250,000 Ottoman troops could cross the Sinai, and 80,000 be based permanently in this fertile area. Whoever could hold the contested ground in the area of Katia and Romani would be in a position to protect the Canal, or within striking distance. The area was patrolled almost daily by Ottoman aircraft, which bombed the recently established Katia camp on 20 April, and both Katia and Romani the next day.

British deployments

The 23 April 1916, was St George's Day
St George's Day
St George's Day is celebrated by the several nations, kingdoms, countries, and cities of which Saint George is the patron saint. St George's Day is celebrated on 23 April, the traditionally accepted date of Saint George's death in AD 303...

 and also Easter Sunday
Easter
Easter is the central feast in the Christian liturgical year. According to the Canonical gospels, Jesus rose from the dead on the third day after his crucifixion. His resurrection is celebrated on Easter Day or Easter Sunday...

, and dawn found the 5th Mounted Yeomanry Brigade, commanded by E. A. Wiggin, scattered over a wide area. The brigade was made up of the Warwickshire Yeomanry
Warwickshire Yeomanry
The Warwickshire Yeomanry was a yeomanry regiment of the British Army, first raised in 1794, which served as a cavalry and dismounted infantry regiment in the First World War and as a cavalry and an armoured regiment in the Second World War, before being amalgamated into The Queen's Own...

, the Gloucestershire Hussars
Royal Gloucestershire Hussars
The Royal Gloucestershire Hussars was a unit of the British Army.Raised in 1795 following William Pitt's 1794 order to raise volunteer bodies of men to defend Great Britain, through various re-organisations, the Royal Gloucestershire Hussars remain today on the establishment of the Territorial...

, and the Worcestershire Yeomanry
Queen's Own Worcestershire Hussars
-History:The Queen's Own Worcestershire Hussars were formed in 1794, as the Worcestershire Yeomanry, when King George III, was on the throne, William Pitt the Younger was the Prime Minister of Great Britain, and across the English Channel, Britain was faced by a French nation that had recently...

. These regiments were deployed as follows:
At Oghrantina was two squadrons
Squadron (cavalry)
A squadron was historically a cavalry sub unit. It is still used to refer to modern cavalry units but can also be used as a designation for other arms and services.-United States:...

 of Worcestershire Yeomanry (less one troop
Troop
A troop is a military unit, originally a small force of cavalry, subordinate to a squadron and headed by the troop leader. In many armies a troop is the equivalent unit to the infantry section or platoon...

), with four officers and 60 other ranks
Other Ranks
Other Ranks in the British Army, Royal Marines and Royal Air Force are those personnel who are not commissioned officers. In the Royal Navy, these personnel are called ratings...

 of the 2/2nd Lowland Field Company Royal Engineers
Royal Engineers
The Corps of Royal Engineers, usually just called the Royal Engineers , and commonly known as the Sappers, is one of the corps of the British Army....

.
At Katia was one squadron and a machine gun subsection of the Gloucestershire Hussars, along with 40 dismounted men of the Worcester Yeomanry, and a detail from the Royal Army Medical Corps
Royal Army Medical Corps
The Royal Army Medical Corps is a specialist corps in the British Army which provides medical services to all British Army personnel and their families in war and in peace...

, Army Veterinary Corps and camel transport.
At Bir el Hamisah were the Warwickshire Yeomanry (less one squadron), and one squadron and one troop from the Worcester Yeomanry.
At Romani, near Pelusium
Pelusium
Pelusium was a city in the eastern extremes of Egypt's Nile Delta, 30 km to the southeast of the modern Port Said. Alternative names include Sena and Per-Amun , Pelousion , Sin , Seyân , and Tell el-Farama...

, were the Gloucester Hussars (less one squadron), and a machine gun subsection in reserve.

At the small oasis of Dueidar 13 miles (20.9 km) south south west of Katia were 156 men; 120 from the 5th Battalion, Royal Scots Fusiliers
Royal Scots Fusiliers
-The Earl of Mar's Regiment of Foot :The regiment was raised in Scotland in 1678 by Stuart loyalist Charles Erskine, de jure 5th Earl of Mar for service against the rebel covenanting forces during the Second Whig Revolt . They were used to keep the peace and put down brigands, mercenaries, and...

 and 36 from the Bikanir Camel Corps, including a few Yeomanry. The 4th Battalion, Royal Scots Fusiliers of the 52nd (Lowland) Division were holding Hill 70, 5 miles (8 km) behind Dueidar.

On 22 April Wiggin and his brigade headquarters, with one squadron and one troop of Worcester Yeomanry, had arrived at Bir el Hamisah from Katia. Wiggin moved there in response to an intelligence report that an Ottoman force was at Bir el Mageibra some distance to the south and, with the agreement of his commander H. A. Lawrence, he prepared to launch a surprise attack. At dawn on 23 April, Wiggin found and destroyed a large but almost empty camp at Bir el Mageibra, capturing six prisoners. He was back at Bir el Hamisah by 09:00, having covered a distance of 16 miles (25.7 km), when he heard news of Ottoman attacks.

Oghratina

The oasis at Oghratina had been occupied by one squadron from the Worcester Yeomanry and a detachment of Royal Engineers 36 hours before the Ottoman attack; a second squadron arrived just 12 hours before the attack, so defensive works had not been extensive. These squadrons stood to at 04:00 in dense sea-fog, which was common at that time of year. They heard the sound of pumps operating at wells 500 yards (457.2 m) to their south west, and an officer who investigated found about 60 Ottoman soldiers. The Yeomanry completely surprised this small Ottoman force, opening fire and causing heavy casualties, but in following up their retreat, the Yeomanry were met with very heavy rifle fire from a much larger force. Soon afterwards, British squadrons on the right were attacked, and by 05:15 the whole camp was being assaulted from north, east and south east in overwhelming strength at a range of 50 yards (45.7 m) or less.

The Ottoman attack began with heavy fire from light guns
Mountain gun
Mountain guns are artillery pieces designed for use in mountain warfare and areas where usual wheeled transport is not possible. They are similar to infantry support guns, and are generally capable of being broken down into smaller loads .Due to their ability to be broken down into smaller...

, machine guns and rifles. Although the commander of the Yeomanry detachment had orders to retire if attacked in force, he could not leave the dismounted engineers. The Ottoman attack was resisted for two hours, but by 07:45 11 Yeomanry officers and 135 other ranks were casualties. The survivors, four officers and 42 other ranks, surrendered.

Katia

At 03:30 "A" Squadron Gloucester Hussars stood to arms and saddled up; a patrol was sent out and returned to report all clear. Soon afterwards a small Ottoman patrol fired on the Yeomanry and retired. About 05:30 heavy fire was heard from Oghratina, and a message was received half an hour later that an attack had been repulsed. At 06:30 another message reported that the attack had been renewed, and a message from Romani reported that Dueidar had also been attacked. At 07:45 another Ottoman attack at Katia was driven off.

At 08:45 a patrol sent out towards Oghratina saw 600 Ottoman soldiers marching towards Katia in open order in two long lines about 1.5 miles (2.4 km) away, followed by more troops in a formed body, and cavalry advancing to the south west to surround Katia. At 09:45 a battery of mountain guns near Er Rabah opened fire on Katia from the north east, which killed or maimed some of the horses within a few minutes.

Rather than retiring to Romani or to Bir el Hamisah, the officer in charge decided to stay at Katia and hope for support from Romani. The Gloucester squadron maintained rapid fire against the increasing numbers of Ottoman attackers, and just before 11:00 British reinforcements from Romani and Bir el Hamisah were seen converging on Katia. Heavy fire from Ottoman rifles and machine guns continued for several hours at Katia, and the Ottomans gradually pressed in on the Yeomanry's front and flanks. Eventually working their way to within 50 yards (45.7 m), the Ottomans rushed the squadron shortly before 15:00.

At about 13:00 the Katia garrison's commanding officer had asked a captain to bring up the horse holders, as every man was needed, but the captain fainted from the effects of a wound before he reached them.While fighting on foot one quarter of the yeomanry were holding the horses; a brigade was equivalent in rifle strength to an infantry battalion. [Preston 1921 p.168] When he came to, he saw the camp had been captured, and galloped with the surviving horses and horse holders to meet escaping Yeomanry. A total of 80 men escaped, including the horse holders and the only officer to get away from Oghratina or Katia. Two officers were killed and three wounded and taken prisoner, while 17 other ranks were killed and 56 missing.

Dueidar

At Dueidar the garrison of 156 rifles defended an area of just 450 by containing six small redoubt
Redoubt
A redoubt is a fort or fort system usually consisting of an enclosed defensive emplacement outside a larger fort, usually relying on earthworks, though others are constructed of stone or brick. It is meant to protect soldiers outside the main defensive line and can be a permanent structure or a...

s. At 04:00 a linesman was sent out to investigate a loss of communication with Katia; the commander of the garrison visited the posts under his command and sent out a patrol to the south east, ordering his troops to stand to arms. The patrol saw nothing in the mist, but at 05:17 a sentry saw a large of group Ottoman soldiers and opened fire on them. This alerted the nearest redoubt garrison armed with 50 rifles and a Lewis gun
Lewis Gun
The Lewis Gun is a World War I–era light machine gun of American design that was perfected and widely used by the British Empire. It was first used in combat in World War I, and continued in service with a number of armed forces through to the end of the Korean War...

 which swept the Ottoman ranks. So effective was the fire that the attackers soon fell back leaving 20 dead and wounded, while an Ottoman mountain gun battery was unable to find the British positions. At 07:00 Ottoman forces attempted to outflank the British position to the south, but were stopped by fire from a small defensive works on that flank containing one Non-commissioned officer
Non-commissioned officer
A non-commissioned officer , called a sub-officer in some countries, is a military officer who has not been given a commission...

 (NCO) and six men. Shortly afterwards Ottoman soldiers repeated their attack on the south eastern redoubt. Some of them got to within 20 yards (18.3 m) of the defensive barbed wire, but were again routed by steady fire.

British and Australian reinforcements

Wiggin ordered the Worcestershire Yeomanry to water at Bir el Hamisah and then advance on Katia, but before watering was complete they saw shells bursting at Katia, and moved off at 09:50 to reinforce the line of the Gloucester squadron on the left.

The remaining squadrons of Warwick Yeomanry, after watering at Bir el Hamisah, moved at 10:30 to attack the Hod um Ugba, which was north east of Katia and half way between Bir el Hamisah and Katia. Wiggin moved off an hour later to attack the same place, and this force became engaged with Ottoman flanking troops. By 13:45 Wiggin had advanced about 1 miles (1.6 km) against very strong opposition, but soon afterwards he saw a commotion among the camels at Katia; the tents in the camp were burning and he decided that the best option was to fall back to Bir el Hamisah.

Reinforcements from Romani, commanded by Lieutenant Colonel R. M. Yorke, attacked the Ottoman force to the north of Katia, but were driven off. These five troops and a machine gun section of Gloucester Hussars moved out from Romani at 10:15 to intercept a column of 500 Ottoman soldiers retiring southeast from Dueidar. Shortly after leaving Romani, firing was heard from Katia, and from some high ground they could see the Ottoman artillery north of Er Rabah shelling the camp. When the Gloucester Hussars advanced towards the Ottoman artillery, it ceased fire, and 15 minutes later was seen to withdraw some distance. The Gloucester Hussars pushed some Ottoman soldiers back to the high ground south of the Hod um Ugba, where Ottoman reinforcements stopped their advance. The strength of the Ottoman attacks made a gradual withdrawal necessary, but long halts were made to enable the wounded at Romani to retire also.

Unfortunately the Gloucester Hussars from Romani were not aware of Wiggin and his reinforcements on the other flank until it was too late, finally coming in sight of them at about 15:00. Wiggin had seen Yorke's force an hour earlier, but had not been able to communicate with it.

Dueidar was reinforced by two companies of 4th Royal Scots Fusiliers from Hill 70 on the railway 5 miles (8 km) to the rear. On approaching Dueidar, a small detachment of reinforcements was sent to the south eastern redoubt. The Ottoman firing line was found to be south of the Dueidar to Katia track and 200 yards (182.9 m) from the principal redoubt. Shortly after the mist cleared, a British aircraft dropped a message that the main Ottoman force was in retreat and that there were only about 150 rifles still attacking. A squadron of the Australian 5th Light Horse Regiment arrived at midday from Kantara, and moved off south east in pursuit of the main Ottoman force, while the garrison at Dueidar attacked the Ottoman rearguard which broke and fled, leaving behind 17 unwounded troops who were taken prisoner. The remainder of 5th Light Horse Regiment arrived at Duidar at 13:30 and took up the pursuit. They captured one officer and 31 other ranks, and killed 75 men; there were 55 British casualties.

Aftermath

The commander of 5th Mounted Brigade decided to retire towards the Suez Canal, and the two squadrons from Romani joined him, abandoning much equipment to ride overnight to Bir el Nuss. Wiggin arrived at Dueidar at 09:00 on 24 April with two squadrons. The 5th Mounted Brigade had been completely surprised; its commander and his important reserve force had been out of position at a critical time following false intelligence, and could not support his regiments. The three and a half squadrons at Oghratina and Katia were decimated—almost all were killed, wounded or captured. This British defeat was the first in a series of devastating setbacks; the Easter Rising
Easter Rising
The Easter Rising was an insurrection staged in Ireland during Easter Week, 1916. The Rising was mounted by Irish republicans with the aims of ending British rule in Ireland and establishing the Irish Republic at a time when the British Empire was heavily engaged in the First World War...

 began in Ireland the next day, and six days later the British garrison in Kut
Kut
Al-Kūt is a city in eastern Iraq, on the left bank of the Tigris River, about 160 kilometres south east of Baghdad. the estimated population is about 374,000 people...

, Mesopotamia
Mesopotamia
Mesopotamia is a toponym for the area of the Tigris–Euphrates river system, largely corresponding to modern-day Iraq, northeastern Syria, southeastern Turkey and southwestern Iran.Widely considered to be the cradle of civilization, Bronze Age Mesopotamia included Sumer and the...

 surrendered
Siege of Kut
The siege of Kut Al Amara , was the besieging of 8,000 strong British-Indian garrison in the town of Kut, 100 miles south of Baghdad, by the Ottoman Army. Its known also as 1st Battle of Kut. In 1915, its population was around 6,500...

.

The overwhelming success of the Ottoman Army's operations during the Affair of Katia demonstrated the attacking strength and determination of Kress von Kressenstein's force in 1916, and their efficient implementation of appropriate tactics, particularly timing and false intelligence. This success was underpinned by the Ottoman infantry's ability to make the gruelling march across the Sinai Peninsula and be fit enough to then launch attacks with force and determination.

On 24 April Romani was reoccupied and the commander of the ANZAC Mounted Division, Major General H. G. Chauvel, took command of the advance positions. The 2nd Light Horse Brigade and the New Zealand Mounted Rifles Brigade of the ANZAC Mounted Division were ordered to Romani and reoccupied the area unopposed by any Ottoman force. The 52nd (Lowland) Division reinforced the garrison at Dueidar and also came under Chauvel's command.

After the battle the area was held by British forces with their main bases at Romani and Kantara. Regular patrols and reconnaissances were carried out over the oases area, until the issue was resolved at the Battle of Romani in August 1916 when British Empire forces won a decisive victory.For a description of the period from April to August, see the 'Occupation of Romani' and 'Reconnaissances May to June 1916' subsections of the Sinai and Palestine Campaign
Sinai and Palestine Campaign
The Sinai and Palestine Campaigns took place in the Middle Eastern Theatre of World War I. A series of battles were fought between British Empire, German Empire and Ottoman Empire forces from 26 January 1915 to 31 October 1918, when the Armistice of Mudros was signed between the Ottoman Empire and...

article.
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