 Many leading Polish artists of the period resided in Kraków, among them the seminal painter Jan Matejko, laid to rest at Rakowicki Cemetery, and the founder of modern Polish drama, Stanisław Wyspiański.Fin de siècle Kraków evolved into a modern metropolis; running water and electric streetcars were introduced in 1901, and between 1910 and 1915, Kraków and its surrounding suburban communities were gradually combined into a single administrative unit called Greater Kraków (').At the outbreak of World War I on 3 August 1914, Józef Piłsudski formed a small cadre military unit, the First Cadre Company—the predecessor of the Polish Legions—which set out from Kraków to fight for the liberation of Poland.