Jewish Military Union
The Polish Home Army Armia Krajowa, who commanded the majority of resistance organizations in Poland (even the National Forces, except the Military Organization Lizard Union; The Home Army also included the Polish Socialist Party – Freedom, Equality, Independence) and coordinating and aiding the Jewish Military Union as well as more reluctantly helping the Jewish Combat Organization, was responsible for the greatest number of acts of sabotage in German—occupied Europe. The Home Army's sabotage operations Operation Garland and Operation Ribbon are just two examples. In all, the Home Army damaged 6,930 locomotives, set 443 rail transports on fire, damaged over 19,000 rail cars "wagony", and blew up 38 rail bridges, not to mention the attacks against the railroads. The Home Army was also responsible for 4,710 built-in flaws in parts for aircraft engines and 92,000 built-in flaws in artillery projectiles, among other examples of significant sabotage. In addition, over 25,000 acts of more minor sabotage were committed. It continued to fight against both the Germans and the Soviets; however, it did aid the Western Allies by collecting constant and detailed information on the German rail, wheeled, and horse transports. As for Stalin's proxies, their actions led to a great number of the Polish and Jewish hostages, mostly civilians, being murdered in reprisal by the Germans. The Gwardia Ludowa destroyed around 200 German trains during the war, and indiscriminately threw hand grenades into places frequented by Germans.