Osowiec fortified region - 60 km, 8 centers of resistance, 35/59/594 (in Poland)
This offensive covered the operations of 2nd Belorussian Front from 6–14 August, after their completion of the Belostock Offensive, with the objective of the fortified area at Osowiec on one of the tributaries of the Narew River.
The defenders were somewhat aided by fortifications from previous eras, including a major Imperial Russian-era fortress complex at Osowiec on the Biebrza River that was a scene of a siege in 1915 (February to August) during the First World War, and which was partly demolished by Wehrmacht troops in 1939 before its surrender to the Red Army.
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Osovets is the Russianised version of the Polish name Osowiec / Ossowiec / Ossowitz.
The defense of Osowiec is comparable to the 1916 battle of Verdun, in France.
The Border Defence Corps Regiment "Sarny", which operated the Area, was very well trained, and its soldiers, including Władysław Raginis, distinguished themselves during the Battle of Wizna (see Polish September Campaign), and in other battlefields in the area of Osowiec and Upper Silesia, where up to 80% of KOP died or were wounded.