In the years of German and Soviet occupation of Poland, all artistic life was dramatically compromised. Cultural institutions were lost. The environment was chaotic, and the writers scattered: some found themselves in concentration and labor camps (or Nazi-era ghettos), others were deported out of the country; some emigrated (Tuwim, Wierzyński), many more joined the ranks of the Polish underground resistance movement (Baczyński, Borowski, Gajcy). All literary outlets were forced to cease operation. Writers who remained at home began organizing literary life in conspiracy, including lectures, evenings of poetry, and secret meetings in the homes of writers and art facilitators. Polish cities where such meetings were held most frequently were: Warsaw, Kraków and Lwów. Writers participated in setting-up of the underground presses (out of 1,500 clandestine publications in Poland, about 200 were devoted to literature). Many fought in the Polish army in exile or resisted the Holocaust in a civil capacity. The generation of the "Kolumbs," born around 1920, were active during the Warsaw uprising. Best-known representatives of the war years are: