During the First World War, the Austrians maintained an armory in Magyaróvár. As a consequence of the Treaty of Trianon, most of Moson county was lost to non-Hungarian lands and all signs of the Habsburg rule were destroyed. What followed was another period of peace, during which time Moson and Magyaróvár were administratively unified as Mosonmagyaróvár. However, cultural differences, and even rivalry, were to persist well into the later twentieth century. During the Second World War, unemployment plummeted and the town's industry prospered. The town did not suffer much damage during the war; in 1946, its significant German population was deported. In 1948 bus services were created. During the later 1940s most of the town's institutions were nationalized by the communist regime. As many as 50 protesting civilians were killed during the revolution of '56, and the town was slow to recover. During the communist years, a new "town center" was developed between the existing Medieval centers of Moson and Magyaróvár, and there was significant development, including the opening of a university, new schools, and other public projects.