Several Catholic countries and populations fell under Nazi domination during the period of the Second World War (1939–1945), and ordinary Catholics fought on both sides of the conflict. Despite efforts to protect its rights within Germany under a 1933 Reichskonkordat treaty, the Church in Germany had faced persecution in the years since Adolf Hitler had seized power, and Pope Pius XI accused the Nazi government of sowing 'fundamental hostility to Christ and his Church'. The concordat has been described by some as giving moral legitimacy to the Nazi regime soon after Hitler had acquired quasi-dictatorial powers through the Enabling Act of 1933, an Act itself facilitated through the support of the Catholic Centre Party. Pius XII became Pope on the eve of war and lobbied world leaders to prev