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 District in September.