The origin of the Northwest Army was the plan to create an army by a group of reactionary
Petrograd officers in the summer of 1918, in the territory controlled by
Germany and with German support to confront the
Bolsheviks. By October 10, 1918, a force of some 6,000 troops was created in the city of
Pskov, which was called the
Northern Corps. A quarter of them were officers of the former Tsarist army, and the rest was made up of local recruits, escaped Petrograd officers and prisoners of war released by the Germans. The military supplies promised by the Germans didn't materialize and the
Northern Corps had to retreat abruptly into Estonia at the end of November 1918. The Estonian Government, faced with a
Bolshevik advance, accepted to take the White force into its territory and supply it, in exchange for passing under its control, and this despite the ideological difference between the independence fighters of Tallinn and the
Russian White Movement. Under pressure from the
British gen. Gough who promised to arrange for Estonian and British military assistance in advance on Petrograd,
Nikolai N. Yudenich formed a Government of Northwestern Region of Russia encompassing Petrograd,
Novgorod and Pskov governorates that officially recognised Estonian independence. Together with the
Finnish counterrevolutionary forces of
Mannerheim, the Estonians and the Northern Corps were able to stop the advance of the Bolsheviks and to launch a counteroffensive in which they took
Pskov and
Yamburg in May 1919. The White administration of the newly conquered territories was disastrous, as Rodzianko's subordinates unleashed a wave of terror against suspected Bolsheviks and against the Jewish population in general. In June, the Northern Corps, now renamed the
Northwestern Army, approached Luga, Ropcha and Gatchina, threatening Petrograd. But the Bolsheviks mobilized their reserves and aligned 40,000 men against the Northwestern Army supported by two Estonian divisions. On August 1, the Bolsheviks launched a counter-attack and drove back the Estonian troops, who were reluctant to fight outside their country. On August 5, Yamburg fell and Pskov was recaptured by the Reds on August 28. == Petrograd Campaign ==