Intervention Corps

According to the Mobilization Plan W, prepared for the war with the Soviet Union (see Plan East), the following units were designed to form the Intervention Corps: Furthermore, some artillery, armored and motorized regiments were to be added to the Corps, as well as three armored trains, engineer platoons and military police regiments.

On March 22, 1939, Marshall Edward Śmigły-Rydz signed Plan West for defense against a future invasion by Nazi Germany.

All units marked with black in mobilization plan were designed to create the Main Reserve of the Commander in Chief (Odwod Glowny Naczelnego Wodza).

In early July 1939, regiments of the 26th Division were transported from Kutno to Wągrowiec and Żnin, with the headquarters established at the elementary school in Wapno near Kcynia.

At the same time, the 9th Division was transported to the area of Koronowo, and placed under authority of General Władysław Bortnowski, commander of Pomorze Army.

All activities of the Corps were to be protected by 9th Infantry Division from Siedlce, and Tuchola Detachment (see Czersk Operational Group), both of which were stationed to the southwest.

According to Polish planners, the Corps was tasked with capturing Danzig after a quick assault from the area of Skarszewy – Starogard Gdański.

On August 30, 1939, due to changes in the political situation, the Corps was disbanded, as Polish intervention in Danzig was cancelled.