Preparations were started immediately, upon order of General Stefan Rowecki, who obliged Colonel Antoni Chrusciel to make the pioneers ready.
The purpose of the action was to paralyse rail transports in the area of Warsaw, and it was to be carried out by 40 men, divided into eight teams.
Two minutes later, the group of Colonel Mieczyslaw Zborowicz blew up tracks on a concrete bridge near Anin, on the route from Warsaw to Dęblin.
At 1:10, the group of Colonel Jozef Pszenny blew up tracks on the route Warsaw - Siedlce, near Rembertow.
No losses were reported by Polish groups, and fearing German reprisals, the Home Army tried to present the operation as the work of Soviet saboteurs, sent to Poland by air.