Great Retreat (Russian)
|Part of the Eastern Front during World War I|
Russian withdrawal in 1915.
|Russian Empire|| German Empire
|Commanders and leaders|
| Grand Duke Nicholas
Nikolay Iudovich Ivanov
| Erich von Falkenhayn
|1,200,000 combat troops, 6000 mobile guns, 9300 fortress guns ||1,136,000 combat troops, 4650 guns|
|Casualties and losses|
|c.500,000 killed, died of wounds, missing, c.1,000,000 prisoners, 9300 fortress guns ||German Army: 200,000 killed, wounded and missing|
The Great Retreat was a strategic withdrawal from the Galicia-Poland salient conducted by the Imperial Russian Army during September 1915 in World War I. The Russians' critically under-manned and (at the points of engagement) outnumbered forces suffered great losses in the Central Powers' July-September summer offensive operations, this leading to STAVKA ordering a withdrawal to shorten the front lines and avoid the potential encirclement of large Russian forces in the salient. While the withdrawal itself was relatively well conducted, it was a severe blow to Russian morale.
During this period, the buildup of forces generally favored the Central Powers. Four new German armies, the 11th, 12th, Army of the Niemen and Army of the Bug were formed. Given the steady erosion of the Russian armies' combat power due to a poorly administered system of reinforcement, particularly of officers, this dramatically shifted the balance of power in the eastern theatre to the Central powers as 13 Central Powers armies faced nine under-strength Russian armies. Under pressure from the Kaiser, Falkenhayn gave in to Hindenburg and Ludendorff's insistence on an offensive in the region. Although Ludendorff and Chief of the Austro-Hungarian General Staff Conrad von Hötzendorf favoured an encirclement operation (attacking the extreme north-east and south-east of the salient), just as STAVKA feared, Falkehayn vetoed this on the grounds of the Central Powers' extremely poor logistical abilities which confined them to slow advances along the major railway lines.
Commanders of the Russian Field Armies in Poland had already worked to persuade the Stavka to order a withdrawal from the salient, but STAVKA had felt unable to take such a bold move due to the political implications. STAVKA also did not permit tactical withdrawals within the salient such as the Second Army's proposal to withdraw behind the Vistula, forcing the field armies to hold tactically disadvantageous or even indefensible positions.
Despite heavy initial resistance, the Gorlice–Tarnów Offensive of May-June 1915 eventually resulted in a series of tactical breakthroughs and Mackensen's armies crossed the San River and re-took the Austro-Hungarian fortress at Przemyśl, the Russians leaving the Galician capital of Lvov on the June 22. At this point STAVKA began planning a retreat from the Poland salient as the Russians's forces in southern Poland withdrew northward to a new defensive line anchored on the Vistula river and the fortress of Ivanovgrod. Between June 23 and 27 the Germans established bridgeheads across the Dniester to the south, but were halted by Russian counterattacks from the east in July.
More worryingly for the STAVKA, the German Tenth and Niemen armies pressed through on the extreme north end of the line in Courland. Although there was nothing worth defending in the area, STAVKA felt pressured to defend it on principle and so created a new army to defend the region. When this army was defeated and pushed back from Courland, STAVKA's over-estimation of the Germans logistical capabilities led to them fearing that these advances could be used as a springboard for further advances. It was feared that further successful advances in the north, combined with a fresh offensive in the south, could lead to the encirclement of the entire Poland-salient. Over-estimation of German naval capabilities also led to fears of an offensive thrust through Pskov to St Petersburg with the aid of amphibious landings in the capital itself.
Due to heavy losses in the Gorlice–Tarnów Offensive the Russian Army as a whole was a million combat troops, roughly 30%, short of its nominal strength of 1.8 million combat troops as well as being in an exposed position in the Poland Salient. But the fortresses of Novogeorgievsk, Ivanonvgorod, Grodno, Osowiec, and Dvinsk that were on or near the front lines at the time contained more artillery (5200 cannon, 3148 modern quick-firing guns, 880 modern heavy artillery pieces) than the entire Russian mobile artillery corps (6000 field guns). Given that the German army itself only had some 6000 field guns, it was expected that these fortresses and the mobile artillery could compensate for the temporary weakness of the infantry and render the Ivangorod-Lublin-Chełm line defensible.
On 13 July, the Central Powers' armies opened a new offensive across the entire front. By the 17th of July the forces Gallwitz's forces in the center-north had taken 80% losses, and although they had only been forced back only some 8 km they had to retreat across the Narew to avoid total annihilation. German advances in the far north in Latvia and Lithuania took the fortress of Grodno in a matter of days, when STAVKA had assumed that it could hold for weeks at the least, and with the renewal of Austro-Hungarian attacks in the south STAVKA now believed that the encirclement of the Poland-salient was inevitable without an immediate withdrawal and so ordered the abandonment of the defensive lines along the Narew and Vistula, trusting that the fortresses could cover the retreat of its forces.
By 13 July, the entire southern wing had been pushed back another 160 km (99 mi) to the Bug River, leaving only a small portion of Congress Poland in Russian hands, anchored on Warsaw and the Ivangorod fortress. On 22 July, armies of Central Powers crossed the Vistula river. In August, the Russian Fourth army left the Ivangorod fortress. With the continuing Russian retreat, Warsaw became isolated, and the German 12th Army (under Gallwitz) seized the opportunity and conquered it on 4–5 August.
New attacks by the German Eighth, Tenth and Twelfth armies moving south out of Prussia soon caused even this front to collapse, sending the entire northern end of the Russian lines streaming backward, eventually forming a line running north-south at about the pre-war eastern Prussian border.
With their troops starving and their forces critically under-strength due to battle-casualties and particularly disease, the German advance was halted by Russian counter-attacks in late September. The new frontline ran from the Baltic sea to the Romanian border by way of the Belarusian forests and disease-ridden Pripyet Marshes. The new line was roughly on the line of Riga-Jakobstadt-Dünaburg-Baranovichi-Pinsk-Dubno-Ternopil.
On 21 August 1915, Tsar Nicholas II took advantage of STAVKA's blunders in losing so many troops to the Central Powers' summer offensives and then retreating only when it was too late to effectively neuter its power by removing Grand Duke Nicholas Nikolaevich from his post as its head, taking direct control of the army.
- Norman Stone, The Eastern Front, 1975, p.174
- Norman Stone, The Eastern Front, 1975, p.191
- Norman Stone, The Eastern Front, 1975, p.191
- Richard L. DiNardo, 2010, p. 132-133
- Johnson, Douglas Wilson (1916). "The Great Russian Retreat". Geographical Review (American Geographical Society) 1 (2): 85–109. doi:10.2307/207761. JSTOR 207761.
- Norman Stone, The Eastern Front 1914-17 (London, 1975) pp.165-193
- Stanley Washburn. Victory in defeat; the agony of Warsaw and the Russian retreat
- Stanley Washburn. The Russian campaign, April to August, 1915