Cichociemni (; the "Silent Unseen") were elite special-operations paratroopers of the Polish Army in exile, created in Great Britain during World War II to operate in occupied Poland (Cichociemni Spadochroniarze Armii Krajowej). A total of 2,613 Polish Army soldiers volunteered for training by Polish and British SOE operatives. Only 606 people completed the training, and eventually 316 of them were secretly parachuted into occupied Poland. The first operation ("air bridge", as it was called) took place on 15 February 1941. This operation was conducted by Captain Józef Zabielski, Major Stanisław Krzymowski and political courier Czesław Raczkowski. After 27 December 1944 further operations were discontinued, as by then most of Poland had been occupied by the Red Army. Of 316 Cichociemni, 103 perished during the war: in combat with the Germans, executed by the Gestapo, or in crashes. A further nine were executed after the war by the Polish People's Republic; the communist regime was hostile to the Cichociemni, considered to be English/British ideologised infiltrators. Ninety-one Cichociemni operatives took part in the Warsaw Uprising of 1944. Name The origins of the name are obscure and may never be known with certainty. "Silent Unseen" probably related to how some soldiers seemingly disappeared from their line units overnight to volunteer for special operations service, and it also describes those "who appear silently where they are least expected, play havoc with the enemy and disappear whence they came, unnoticed, unseen."<ref>Kazimierz Iranek-Osmecki, The Unseen and Silent, p. 350.</ref> The Silent Unseen were trained initially in Scotland in preparation for missions for the Polish underground in occupied Poland, such as building-clearance and bridge-demolition. In 1944, training was also carried out in Brindisi, Italy, which had fallen to the Allies. Initially, the name was informal and was used mainly by soldiers who volunteered to parachute into Poland. However, from September 1941 the name became official and was used in all documents. It was applied to the secret Polish Headquarters training unit created to provide agents with necessary knowledge, money and equipment and to agents who were transported to Poland and other German-occupied countries. History On 30 December 1939 Captain Jan Górski, a Polish Army officer who had escaped to France after the invasion of Poland, drew up a report for the Polish Chief of Staff. Górski proposed creating a secret unit to maintain contact with the underground ZWZ, using a group of well-trained envoys. After his report