Operation Ostra Brama
Operation Ostra Brama (Polish: Operacja „Ostra Brama”, lit. 'Operation Sharp Gate') was the Polish Home Army's attempted takeover of Vilnius (Polish: Wilno) in wake of the German Wehrmacht's evacuation, ahead of the approaching Soviet Red Army's Vilnius offensive. A part of a Polish national uprising, Operation Tempest, the action happened on 7–13 July 1944.