Battle of Bucharest

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Battle of Bucharest
Part of the Romanian Campaign of World War I
Falkenhayn's cavalry entering Bucuresti on December 6, 1916.jpg
Falkenhayn's cavalry entering Bucharest on 6 December 1916
Date27 November – 6 December 1916
Bucharest, Romania

Central Powers victory

  • Central Powers occupation of Bucharest
 Russian Empire
 German Empire
Commanders and leaders
Kingdom of Romania Constantin Prezan German Empire Erich von Falkenhayn
German Empire August von Mackensen
150,000 250,000
Casualties and losses
60,000 soldiers
85 artillery pieces
115 machine guns[1]
10,000 soldiers

The Battle of Bucharest, also known as the ArgeşNeajlov Defensive Operation in Romania, was the last battle of the Romanian Campaign of 1916 in World War I, in which the Central Powers' combatants, led by General Erich von Falkenhayn, occupied the Romanian capital and forced the Romanian Government, as well as the remnants of the Romanian Army to retreat to Moldavia and re-establish its capital at Iaşi.

The battle was of defensive nature, as the Romanian Army was joined by a part of the imperial Russian army. The Romanian Army, led by General Constantin Prezan, had previously been unable to stop the German counterattack in Muntenia. The armed forces that made up the German counterattack were mostly German, two armed groups attacking concentrically, one from the direction of Oltenia and the other from the South of the Danube. The sheer number of troops involved, as well as the large area of operations, make it one of the most complex battles fought on Romanian soil during the war.

The battle took place between 13 December and 16 December 1916. At the same time, between 14 December and 19 December 1916, the battle of Argeș took place. There, the Bulgarian and German armies led by General August von Mackensen reported a glorious victory. The outcome of the two battles was Bucharest being occupied on 19 December by the Central Powers and the Romanian and Russian forces' retreat to Moldavia, all the way to the Siret.


After three months of heavy fighting, the Central Powers finally managed to push all Romanian troops beyond the Olt River on 26 November 1916. The next day, they began their advance towards the city. The Prunaru Charge launched by the Romanian Cavalry the following day managed to delay the Central Powers, giving precious time to the Romanian forces who were building up east of the Argeș river.


The Romanian and Russian forces, made up of approximately 150.000 men, were led by General Constantin Prezan, while the Central Powers' armed forces were led by General August von Mackensen and Erich von Falkenhayn.

Following a series of losses on the Romanian Army's side in Oltenia and Muntenia, the political authorities decided to appoint General Constantin Prezan commander of Army 1, with the immediate objective of organizing the defense of Bucharest. "Through a Supreme Order you are temporarily named commander of Army 1. As such, we ask of you report tomorrow, 10 November, at 10:30 A.M. at the General Quarters. You shall take Captain Antonescu Ion with you from the North Army."[2]

The strategy[edit]

In spite of the disastrous strategic situation that he was presented with, Prezan, alongside of the leader of the newly arrived French military mission to Romania, General Henri Berthelot, elaborate a plan of operations that involved a surprise flanking maneuver at the division between Mackensen's armed forces and Kühne's. That division referred to a 20-kilometer area between the German forces' two groups of combatants.

Prezan ordered a concentrated attack made up of seven divisions against Mackensen's group. Divisions 18 and 21 attacked frontally to pin the German forces down, while Divisions 2/5, 9/19 Infantry and Division 2 Cavalry attacked the exposed left flank of Mackensen's group. At the same time, two newly arrived Russian divisions, Cavalry 8 and Infantry 40 attacked the left flank.[3]

The battle[edit]

The conduct of military actions
Operations in Romania, November 1916 to January 1917

On 13 December, the Romanian Army began its attack, striking the 20 km wide gap between the Mackensen and Falkenhayn groups, thus causing the retreat of Mackensen's platoon and the reversal of von Falkenhayn's platoon's flank.[4] The plan succeeded in its early stage, as the Romanian and Russian forces managed to surprise the enemy. Romanian forces captured thousands of prisoners and significant quantities of material during this counter-offensive.[5] German General Erich Ludendorff considered the situation to be very serious: "On 1 December the left flank of the Danube Army was very powerfully attacked South-West of Bucharest and pushed back. The German troops who crossed the Neajlov were cut off and isolated. The situation most certainly became very critical."[6] Only the last-minute intervention of the 26th Turkish Infantry Division on 2 December saved Mackensen's group from encirclement.[5]

The Romanians suffered a considerable setback when a staff car carrying attack plans accidentally drove into a German position and was captured.[7] These plans were vital to the Germans. As various developments took place, (General Culcer's "betrayal", the lack of involvement on the part of the Russian armed forces), the German, Bulgarian and Turkish forces, by taking advantage of their superior numbers, soon managed to recover and push back the Romanian forces, leaving the way to the capital open.

Thus, on 6 December 1916, the German troops entered Bucharest and occupied it. In the end, the Romanian Government and the Romanian armed forces were forced to retreat to Moldavia.

Even though the Battle for Bucharest was lost, it only served as a tactical defeat in the end, as the Central Powers failed their strategic goal of eliminating Romania from the war.

The Battle for Bucharest is considered to be the most complex military operation undertaken by the Romanian Army in 1916, both because of the number of men involved and because of its length, as well as because of the length of its front line. Bucharest was eventually liberated after the Central Powers capitulated in 1918.


After the battle, minor actions were fought in the fortifications surrounding Bucharest between the invading Germans and the Romanian reserves which had failed to arrive due to the actions of Alexandru Socec [ro], a subordinate of Constantin Prezan and a naturalized German. The city was eventually occupied by the Central Powers on 6 December. However, in spite of the human, material and military efforts made by the Central Powers throughout this period, they failed to achieve their fundamental political and strategic goal, namely Romania's defeat and her getting out of the war. Despite heavy casualties, some 250,000 men, which were almost one third of the manpower mobilized in August 1916, and losses of combat material, the Romanian Army was still a force taken into consideration by allies and enemies alike and capable to offer resistance to further attacks. Before retreating, Romanian troops burned down the oil wells at Ploiești along with the surrounding wheat fields so as to keep them out of the hands of the Central Powers.

Bucharest was eventually liberated after the Central Powers' surrender in 1918.


  1. ^ Michigan War Studies Review
  2. ^ *** (1996). (in Romanian) Marele Cartier General al Armatei României. Documente 1916–1920, București: Ed. Machiavelli, p. 153
  3. ^ Glen Torrey (1999). Romania and World War I: A Collection of Studies, Center for Romanian Studies, Portland, pp. 246–250
  4. ^ Basil Henry Liddell Hart (1992), History of the First World War, Macmillan Papermac, ISBN 9780333582619, p. 349
  5. ^ a b Charles Clark (1971). United Roumania [sic], New York: Arno Press, p. 154
  6. ^ Erich Ludendorff, My War Memories 1914-1918, Naval & Military Press, 2001, ISBN 9781845743031, pp 299-300
  7. ^ Burg & Purcell 2004, p. 146.