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Operational Group (Polish:Grupa Operacyjna,GO) was the highest level type of tactical division of thePolish Army at various points in the 20th century, mainly during the Second World War.
Operational groups first appeared in the Polish tactical scheme during thePolish-Bolshevik War, most probably under the influence ofFrench Military Mission to Poland. After the war they were dissolved.
In the autumn of 1938, theIndependent Operational Group Silesia was created with the purpose of capturingTrans-Olza fromCzechoslovakia.
Prior toWorld War II, operational groups were recreated on a larger scale. Initially, in March 1939, Operational Groups consisted only of staffs formed around existingcorps commands. Some groups were formed during the final mobilization of late August 1939, while others were formed during the war as strategic considerations necessitated. Most were attached to armies, several however were independent. According to the Polish mobilization scheme, they were to become mobile reserves of thePolish armies and other major strategic-scale units. One such group, theKutno Operational Group, was planned but never created
Independent Operational Groups:
Cavalry Operational Groups:
Operational Groups formed as parts of armies:
In addition, during theinvasion of Poland in 1939, several other corps-sized units were formed or improvised. All of them were named after their commanding officers:
There were also several operational groups created by thePolish People's Army (Ludowe Wojsko Polskie) after the war in the years 1946-1947.