In the middle of the 19th century, the Rudelsburg became a regular meeting point for students’ corps, whose umbrella organisation the "Kösener Senioren-Convents-Verband" (KSCV) had been founded in Jena in 1848, making it the oldest union of German student fraternities. The site of the KSCV’s annual meeting was soon moved to Bad Kösen, and a meeting took place in the Rudelsburg for the first time in 1855. From this time until World War I, the Rudelburg served every year as a social meeting point during the annual meeting in Bad Kösen.