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
Wojciech Jaruzelski Soviet leadership. Jaruzelski was elected his successor, becoming the only professional soldier to become leader of a ruling European Communist party. A fortnight after taking power, Jaruzelski met with Solidarity head Lech Wałęsa and Catholic bishop Józef Glemp, and hinted that he wanted to bring the church and the union into a sort of coalition government. However, his intention was to crush Solidarity. As early as September, while he was still merely prime minister, he met with his aides to find an excuse to impose martial law. On 13 December, citing purported recordings of Solidarity leaders planning a coup, Jaruzelski