By order of the Petrograd Defense region and the Northern Screen on 14 March 1918, the Pskov detachments created to repulse the advance of German troops in February 1918 joined the Luga district and reorganized as part of the Novoselskaya department of the district. Between March and May it guarded the demarcation line in the area of Pskov. The district was renamed the Novgorod sector on 1 April 1918, and on 21 April the formation of the Pskov Infantry Division from units of the Luga District and a cadre from the Novgorod Infantry Division of the Imperial Army. The Pskov Division was renamed the Luga Infantry Division on 17 May and on 9 June the headquarters of the Novgorod Sector merged with that of the Luga Infantry Division. The existence of the latter proved brief, however, as on 31 May it was renamed the 4th Petrograd Infantry Division. The division was transferred to the Yaroslavl Military District in July and then to the Volga Military Districtin September. The division joined the 5th Army of the Southern Front in October and fought in defensive battles against the Don Army in the area of Novokhopyorsk and Borisoglebsk until December. By an order of the Southern Front on 21 January 1919, the division was merged with elements of the 11th Nizhny Novgorod Rifle Division to become the Consolidated Rifle Division. Briefly transferred to the 9th Army in January 1919, the 11th was relocated to the Western Front in February, where it was redesignated as the 11th Rifle Division on 1 March. The 11th fought against Estonian troops and the forces of Stanisław Bułak-Bałachowicz in the area of Marienburg in April, serving as the headquarters of the Marienburg Group of Forces. In May the division became part of the Army of Soviet Latvia, which was redesignated as the 15th Army on 9 June. The division was renamed the 11th Petrograd Rifle Division on 7 August 1919. During that month it fought in the defense of Petrograd and the offensive against the Northwestern Army in the Pskov area, then on the Luga–Gdov, Yamburg, Narva, and Dvinsk–Rezhitsa sectors between October and December and January and February 1920. The 11th then fought against Polish troops in the area of Lake Ssho, Kamen, and Ushachy, and in the May Offensive. The division fought in the July Offensive during the Polish–Soviet War between 4 and 23 July and then in the Battle of Warsaw, fighting in the area of the Narew and the Vistula, retreating into Belarus after the Red defeat in the Battle of Warsaw. The 15th Army was disbanded in December and the division joined the Petrograd Military District. It fought in the suppression of the Kronstadt rebellion in March 1921 as part of the 7th Army.
Interwar period
The division's title Petrograd was changed to Leningrad in February 1924 after the city was renamed, becoming the 11th Leningrad Rifle Division. At the same time, the Petrograd Military District became the Leningrad Military District. The division was awarded the Honorary Revolutionary Red Banner in 1928 in recognition of its actions during the Russian Civil War. The division fought in the Winter War between January and March 1940, and was part of the 65th Rifle Corps of the Baltic Special Military District between August and October of that year.
