Editing Operation Tempest (section)

===Northeast Operation Ostra Brama===
{{main|Operation Ostra Brama}}
In the north, on July 7, 1944, the forces of the {{Ill|Wilno District (Home Army)|lt=Wilno|pl|Okręg Wilno Armii Krajowej}} and {{Ill|Nowogródek District (Home Army)|lt=Nowogródek Home Army districts|pl|Okręg Nowogródek Armii Krajowej}} (some 13,000 men under Colonel [[Aleksander Krzyżanowski]]) launched an [[Operation Ostra Brama|attack on German-occupied Vilnius]], although the attack stalled until the arrival of Soviet forces. The AK and Soviet armies then jointly occupied the city on July 13. Prior to the assault, the surrounding countryside had also been seized by Polish and Soviet partisans. Cooperation ended almost immediately after Vilnius was occupied; on July 14, Krzyżanowski and his officers were disarmed and imprisoned, and AK units who resisted disarmament were violently crushed by Soviet forces, with dozens of Polish fatalities.<ref>[[Włodzimierz Borodziej]], Barbara Harshav (transl.),  [https://books.google.com/books?id=YHO0F65ifDIC&pg=PA55 The Warsaw uprising of 1944.] University of Wisconsin Press, 2006.</ref>