Union of Retaliation

It was created by General Stefan Rowecki, head of the Armed Resistance, as that organization's branch dedicated to sabotage and covert operations.

Initially headed by Maj. Franciszek Niepokólczycki Teodor, the organization was aimed at diminishing the German military and industrial potential by means of active and passive sabotage.

Out of several hundred thousand actions (mainly in Silesia, Lesser Poland, Holy Cross Mountains and Mazovia), perhaps the best known is the Wieniec.

In December, the action was continued by the ZO in Eastern Poland, as a reprisal for the German terror in the area around Zamość.

After the ZWZ was reformed into the Armia Krajowa, the ZO was again incorporated into it, merged with the Wachlarz and OSA units and formed the backbone of the Kedyw organization.