Wojciech Jaruzelski this Soviet-controlled First Polish Army during the war. He participated in the 1945 Soviet military takeover of Warsaw and the Battle of Berlin. By the time the war ended that year, he had gained the rank of lieutenant. He "further credited himself in Soviet eyes" by engaging in combat against the non-Communist Polish Home Army, from 1945 to 1947. After the end of the war, Jaruzelski graduated from the Polish Higher Infantry School, followed by graduation from the General Staff Academy. He joined Poland's Communist party, the Polish United Workers' Party, in 1948 and became an informant for the Soviet
Soviet reaction to the Polish crisis of 1980–1981 once again, on 13 December 1981, Jaruzelski finally proclaimed martial law. To justify the emergency measures, Jaruzelski was still playing on the public fear of Soviet invasion. However, there was no significant resistance to the martial law and any foreign military backing proved unnecessary. Ever since, Jaruzelski himself has denied that he invited Soviet troops, insisting that, on the contrary, the martial law was aimed at prevention of a Soviet military intervention. In November 1997, a conference was held in Jachranka on the Soviet role in the Polish crisis of 1980–1981, where Solidarity, Polish communist, Soviet and American participants of