During World War II the Polish resistance Armia Krajowa (Home Army), which conducted military operations against occupying German forces, was also heavily involved in intelligence work. This included operations investigating the German "Wunderwaffe:" the V-1 flying bomb and the V-2 rocket. British intelligence received their first Polish report regarding the development of these weapons at Peenemünde in 1943.
By the summer of 1941 Home Army intelligence began receiving reports from its field units regarding some kind of secret tests being carried out by the Germans on the island of Usedom in the Baltic Sea. A special "Bureau" was formed within intelligence group "Lombard", charged with espionage inside the 3rd Reich and the Polish areas incorporated into it after 1939, to investigate the matter and to coordinate future actions. Specialized scientific expertise was provided to the group by the engineer Antoni Kocjan, "Korona", a renowned pre-war glider constructor. Furthermore, as part of their operations the "Bureau" managed to recruit an Austrian Anti-Nazi, Roman Traeger (T-As2), who was serving as an NCO in the Wehrmacht and was stationed on Usedom. Trager provided the AK with more detailed information regarding the "flying torpedoes" and pinpointed Peenemünde on Usedom as the site of the tests. The information obtained led to the first report from the AK to the British which was purportedly written by Jerzy Chmielewski, "Rafal", who was in charge of processing economic reports the "Lombard" group obtained.
After V-2 flight testing began near the village of Blizna, south of Mielec (the first launch from there was on November 5, 1943), the AK had a unique opportunity to gather more information and to intercept parts of test rockets (most of which did not explode).
The AK quickly located the new testing ground at Blizna thanks to reports from local farmers and AK field units, who managed to obtain on their own pieces of the fired rockets, by arriving on the scene before German patrols. In late 1943 in cooperation with British intelligence, a plan was formed to make an attempt to capture a whole unexploded V-2 rocket and transport it to Britain.