The Battle of Dumlupınar (Greek: Μάχη του Τουμλού Μπουνάρ, romanized: Máchi tou Toumloú Bounár, Turkish: Dumlupınar (Meydan) Muharebesi, lit. 'Dumlupınar (Field) Battle'), also known as the Field Battle of the Commander-in-Chief (Turkish: Başkumandanlık Meydan Muharebesi) in Turkey, was one of the important battles in the Greco-Turkish War (1919–1922) (part of the Turkish War of Independence). The battle was fought from 26 to 30 August 1922 near Dumlupınar, Kütahya in Turkey.
Background
Following the attrition battle on the Sakarya River (Battle of Sakarya) in August–September 1921, the Greek Army of Asia Minor under General Anastasios Papoulas retreated to a defensive line extending from the town of İzmit (ancient Nicomedia) to the towns of Eskişehir and Kara Hisâr-ı Sahib (present-day Afyonkarahisar). The Greek line formed a 700 km arc stretching in a north–south direction along difficult hilly ground with high hills, called tepes, rising out of broken terrain and was considered to be easily defensible. A single-track railway line ran from Kara Hisâr to Dumlupınar, a fortified valley town some 30 miles (48 km) west of Kara Hisâr surrounded by the mountains Murat Dağı and Ahır Dağı, and thence to İzmir (ancient Smyrna) on the coast. This railway was the main supply route of the Greeks. The Greek headquarters at Smyrna was effectively incapable of communicating with the front or exercising operational control.
Preparations
The morale of the Greek troops was low, as many had already been under arms for several years, and there was no prospect for a quick resolution of the war. Political dissent and the fact that they were occupying unfriendly territories further depressed their morale.
Despite pressure to attack building up at Ankara, Mustafa Kemal who had been appointed Commander-in-Chief of the TBMM government, waited and utilized the breathing space to strengthen his forces and split the Allies through adroit diplomatic moves, ensuring that French and Italian sympathies lay with the Turks rather than the Greeks. This isolated in terms of diplomacy the pro-Greek British.
He finally decided to strike the Greeks in August 1922. Knowing that Turkish forces were only adequate to mount one major offensive, he strengthened the Turkish First Army under "Sakallı" Nureddin Pasha, which was deployed against the southern flank of the Greek salient jutting out to Kara Hisâr. This was a gamble, because if the Greek Army counter-attacked on his weakened right flank and pivoted south, his forces would be cut off.
Opposing forces
Greek forces
The Greek forces were organized in the "Army of Asia Minor", under Lieutenant General Georgios Hatzianestis, with a total of 220,000 men in 12 infantry and 1 cavalry division. The Army HQ was located in Smyrna. The Army of Asia Minor comprised three Corps (I, II and III), under Major General Nikolaos Trikoupis (I Corps in Kara Hisâr), Major General Kimon Digenis (II Corps in Gazligöl) and Major General Petros Soumilas (III Corps in Eskişehir). It also included an independent Cavalry division and smaller regiment-sized Military Commands, mainly for interior protection and anti-guerrilla operations. The total Greek front spanned 713 km.
Each Greek corps had four divisions. Ι Corps consisted of the 1st, 4th, 5th and 12th divisions. II Corps consisted of the 2nd, 7th, 9th and 13th divisions. III Corps consisted of the 3rd, 10th, 11th and the "Independent" divisions. Each Greek division had 2–4 three-battalion regiments and 8–42 artillery pieces (artillery was redistributed between front-line and reserve divisions). Although numerically strong, the Greeks were very deficient in heavy artillery (only 40 outdated pieces existed in the entire front) and cavalry (one half-company per division).
Turkish forces
The Turkish forces were organized in the Western Front, under Mustafa Kemal Pasha, with a total of 208,000 men in 18 infantry and five cavalry divisions. For the purposes of the offensive, the Western Front HQ was located on Koca Tepe hill, some 15 km south of Kara Hisâr, very close to the battle lines. The Western Front consisted of the First Army under Mirliva Nureddin Pasha, based also on Koca Tepe hill, the Second Army under Mirliva Yakub Shevki Pasha (Subaşı) based in Doğlat, the Kocaeli Group under Colonel Halid Bey (Karsıalan), and the V Cavalry Corps under Mirliva Fahreddin Pasha (Altay).
For the purpose of the offensive, the Turkish command redistributed its forces, reinforcing the First Army. The First Army consisted of the I Corps (14th, 15th, 23rd, and 57th infantry divisions), the II Corps (3rd, 4th, and 7th infantry divisions), and the IV Corps (5th, 8th, 11th, and 12th infantry divisions). The Second Army consisted of the III Corps (Porsuk detachment (regiment) and 41st division), the VI Corps (16th and 17th infantry divisions plus one provisional cavalry division), and the independent 1st and 61st infantry divisions. The Kocaeli Group consisted of the 18th infantry division plus additional infantry and cavalry units. The V Cavalry Corps consisted of the 1st, 2nd, and 14th cavalry divisions. Each Turkish infantry division consisted of one assault infantry battalion, three three-battalion infantry regiments, and 12 artillery pieces, with an average total strength of 7,500 men.
Opposing plans
Turkish plan
The Turkish plan was to launch converging attacks with the 1st and 2nd Armies against the Greek positions around Kara Hisâr. The First Army would attack northwards, on the Greek positions southwest of Kara Hisâr, held by the Greek A' Corps. The V Cavalry Corps would assist the First Army by infiltrating through less guarded Greek positions in Kirka valley, and coming behind the Greek front lines. The Second Army would attack westwards, on the Greek positions north of Kara Hisâr.
The first objective was to cut the Smyrna-Kara Hisâr and the Kara Hisâr-Eskişehir railroad lines, thus cutting off the Greek forces in and around Kara Hisâr from Smyrna and the C' Corps in Eskişehir. In a second phase the 1st and 2nd Armies would meet in the area south of Kütahya, closing a ring around the Greek forces in Kara Hisâr and completely encircling them.
Greek plan
The Greek high command had anticipated a major Turkish offensive, it was however uncertain of the exact direction it would come. The Greeks expected the Turkish attack to come either along the Ankara-Eskişehir railroad line or the Konya-Kara Hisâr railroad line. Unknown to them at the time, the railroad from Ankara, that the Greeks destroyed in summer 1921 during the withdrawal after the battle of Sakarya, was still not restored and was not operational. Following the withdrawal from the Sakarya, initially the Greek Corps' commands were disbanded, and the Asia Minor Army was organised into two groups, the North and South groups, each sufficiently strong to fight independently and repel any Turkish attack. Following the replacement of the Army's commander, and the coming of Lt. General Georgios Hatzianestis the Greek disposition changed. Hatzianestis re-established the three Corps commands. All three Corps controlled parts of the front, but in essence the B' corps operated as a general reserve, while the I (around Kara Hisâr) and III (around Eskisehir) Corps were mostly deployed on the front.
In the case of a Turkish offensive the II Corps would fall under the command of the sector which was attacked (either I Corps to the south or III Corps to the north). Hatzianestis, despite reports indicating the opposite, believed that the Greek front-lines were sufficiently strong to withstand any Turkish attack for enough time that the B' Corps would launch its own flanking counterattack, on the flanks of the attacking Turkish armies.
Prior to the Turkish offensive Greek intelligence had revealed the Turkish preparations, but it failed to estimate correctly the size of the Turkish formations and the exact date of the Turkish attack. When the Turkish attack opened Greek reinforcements were still underway to the front.
Battle
Turkish attack and breakthrough (26–27 August 1922)
The Turkish attack opened in the night of 25–26 August 1922, when the Turkish V Cavalry Corps passed through the Kirka gorge behind the Greek lines. The gorge was guarded by a patrolling Greek rifle company, which was easily overrun by the advancing Turkish cavalry. The Turkish cavalry proceeded to cut the Greek telegraph lines and the railway line (by 18:00 hours on 26 August both had been cut), thus seriously hampering communications between Smyrna and Kara Hisâr.
On the morning of 26 August the Turkish First and Second Armies attacked simultaneously. The Second Army's attack, following a powerful artillery barrage, took the Greeks by surprise and was able to take some front line positions of the 5th Greek division (of the Greek I Corps). Renewed Turkish attacks had little success. After being reinforced, the Greek 5th division carried limited counterattacks and restored its original front. The Second Army also attacked the positions of the III Corps keeping its forces pinned, thus preventing it from the reinforcing the II Corps.
The First Army's attack was preceded by a devastating and accurate artillery barrage. The much superior Turkish heavy artillery knocked out the light Greek batteries, and caused heavy casualties to the front-line Greek infantry battalions (some lost up to 50% of their strength during the artillery barrage alone due to inadequate trenches). The artillery barrage was followed by a general Turkish attack by 7 infantry divisions of the I and IV Corps, against 2 Greek divisions (1st and 4th). The situation for the Greek Ι Corps became almost immediately critical, as they faced overwhelming forces and soon all Corps' reserves were committed to battle. The Turkish attack was focused mainly on the seam of the Greek 1st and 4th divisions. By noon the Turkish I Corps had succeeded in carrying the Greek 1st division's trenches. The arrival as a reinforcement of the II Corps' 7th division in the afternoon prompted a Greek counterattack which was able to only partially restore the line.
The Greek Army HQ in Smyrna had no clear picture of the situation. In its order at 23:00 hours on 26 August to the I and II Corps the Army expressed the opinion that the Turks had still not revealed the main axis of their offensive. The Army proceeded with its original plan, by ordering the Greek II Corps to prepare for a counteroffensive on the Turkish right flank, while the I Corps would keep its positions. The counter-offensive was expected to be launched on 28 August. These orders directly conflicted with the orders that the I Corps had already issued to the II Corps, and subsequently the I Corps ordered the II Corps to stop any preparations for a counteroffensive and resume sending its forces south to reinforce the badly battered 1st and 4th divisions. Due to the broken communications, the Army HQ in Smyrna didn't receive the notifications of the I and II Corps and had the impression that things developed as it had ordered.
At 02:00 hours on 27 August (Day 2 of the Turkish offensive) Turkish artillery began its barrage again, and at 06:00 hours Turkish infantry resumed its attacks. The Turkish forces focused again on the seam of the Greek 1st and 4th divisions, and advancing steadily they managed by 09:00 hours to achieve a clear breakthrough in the Greek line when the Turkish IV Corps under Colonel Sami took the 5,000-foot-high (1,500 m) peak of Erkmentepe (38°44′36.2″N 30°28′32.1″E / 38.743389°N 30.475583°E). At 10:30 hours the Greek Ι Corps issued an order of general withdrawal some 20 km to the north of its original line, and the subsequent evacuation of Kara Hisâr. The order was not received by the Greek 1st division, whose telephone contact with the Ι Corps had been cut and couldn't establish wireless communication, and remained in position. By 13:30 hours its front was collapsing exposing the flank of the 4th division. The 1st division, together with the 7th division retreated without being seriously harassed by the Turks, and by 17:00 hours they had reached their new positions.