 Thus Leski– still suffering from wounds received in September 1939 and unfit for front-line service in the Forest Units– became a leading intelligence officer with the Musketeers and later with the Home Army.His most important achievements included a complete list of German military units, their insignia, numbers and dispositions.He and his cell also prepared detailed reports on the logistics and transport of German units bound for the Eastern Front, and on the state of bridges, railways and roads in German-held Europe.