David WILLIAMSON 
The Polish Underground provided valuable intelligence to the Allies
The USSR, on the other hand, viewed the role of the London backed Home Army (Armia Krajowa -AK) as an agent of anti-Communism, and in January 1944 created its own underground organisation (Armia Ludowa- AL) which targeted not only the German occupying forces, but also the AK in preparation for setting up a Communist Poland.
