The eight teams were divided into two groups. The first one, under Jozef Pszenny, operated on the right bank of the [[Vistula]], the second one, under Zbigniew Lewandowski, operated on the left bank of the river. Pszenny’s team, consisting of four groups, began the operation on October 8, at 0:25, when the group of Sergeant Waclaw Klosiewicz blew up rail tracks on the route from Warsaw to (near [[Zielonka]]). Two minutes later, the group of Colonel Mieczyslaw Zborowicz blew up tracks on a concrete bridge near [[Anin]], on the route from Warsaw to [[Deblin]]. At 1:10, the group of Colonel Jozef Pszenny blew up tracks on the route Warsaw - [[Siedlce]], near [[Rembertow]]. At the same time, the group of Colonel Wladyslaw Babczynski blew up tracks on the route Warsaw - [[Dzialdowo]], north of Warsaw.