In September 1939, the Polish government officials sought refuge in Romania, but their subsequent internment there prevented the intended continuation abroad as the government of Poland. General Władysław Sikorski, a former prime minister, arrived in France, where a replacement Polish Government-in-Exile was soon formed. After the fall of France, the government was evacuated to Britain. The Polish armed forces had been reconstituted and fought alongside the Western Allies in France, Britain and elsewhere. A Resistance movement began organizing in Poland in 1939, soon after the invasions. Its largest military component was a part of the Polish Underground State network of organizations and activities and became known as the Home Army. The whole clandestine structure was formally directed by the Government-in-Exile through its delegation resident in Poland. There were also peasant, right-wing, leftist, Jewish and Soviet partisan organizations. Among the failed anti-German uprisings were the Warsaw Ghetto Uprising and the Warsaw Uprising. The aim of the Warsaw Uprising was to prevent domination of Poland by the Soviet Union.